SAFECO COMMON STOCK TRUST
NSAR-A, 1998-08-26
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<PAGE>      PAGE  1
000 A000000 06/30/98
000 C000000 867579
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 SAFECO COMMON STOCK TRUST
001 B000000 811-6167
001 C000000 4253768213
002 A000000 10865 WILLOWS ROAD,N.E.,  E-2
002 B000000 REDMOND
002 C000000 WA
002 D010000 98052
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  8
007 C010100  1
007 C020100 SAFECO GROWTH FUND
007 C030100 N
007 C010200  2
007 C020200 SAFECO INCOME FUND
007 C030200 N
007 C010300  3
007 C020300 SAFECO EQUITY FUND
007 C030300 N
007 C010400  4
007 C020400 SAFECO NORTHWEST FUND
007 C030400 N
007 C010500  5
007 C020500 SAFECO INTERNATIONAL STOCK FUND
007 C030500 N
007 C010600  6
007 C020600 SAFECO BALANCED FUND
007 C030600 N
007 C010700  7
007 C020700 SAFECO SMALL COMPANY STOCK FUND
007 C030700 N
007 C010800  8
007 C020800 SAFECO US VALUE FUND
007 C030800 N
007 C010900  9
007 C011000 10
011 A00AA01 SAFECO SECURITIES, INC.
011 B00AA01 8-13470
011 C01AA01 SEATTLE
<PAGE>      PAGE  2
011 C02AA01 WA
011 C03AA01 98185
012 A00AA01 SAFECO SERVICES CORP.
012 B00AA01 84-00138
012 C01AA01 SEATTLE
012 C02AA01 WA
012 C03AA01 98185
013 A00AA01 ERNST & YOUNG, LLP
013 B01AA01 SEATTLE
013 B02AA01 WA
013 B03AA01 98104
018  00AA00 Y
019 A00AA00 Y
019 B00AA00   25
019 C00AA00 SAFECOFUND
020 A000001 INSTINET CORP.
020 B000001 13-3443395
020 C000001    267
020 A000002 SANFORD C. BERNSTEIN & CO., INC.
020 B000002 13-2625874
020 C000002    174
020 A000003 J.C. BRADFORD & CO., INC.
020 B000003 62-0136910
020 C000003     87
020 A000004 PAINE WEBBER, INC.
020 B000004 13-2638166
020 C000004     77
020 A000005 BUCKINGHAM RESEARCH GROUP, INC.
020 B000005 13-3134008
020 C000005     66
020 A000006 PRUDENTIAL BACHE SECURITIES, INC.
020 B000006 22-2347336
020 C000006     66
020 A000007 FIRST ANALYSIS SECURITIES CORP.
020 B000007 36-3158137
020 C000007     59
020 A000008 J.P. MORGAN, INC.
020 B000008 13-3224016
020 C000008     56
020 A000009 DILLON, READ & CO.,INC.
020 B000009 13-1939216
020 C000009     54
020 A000010 SALOMON, SMITH BARNEY,HARRIS UPHAM & CO.,INC.
020 B000010 13-1912900
020 C000010     53
021  000000     2227
022 A000001 ASSOCIATES CORP. OF NORTH AMERICA
022 B000001 74-1494554
022 C000001   8507477
022 D000001         0
022 A000002 SSGA PRIME MONEY MARKET PORTFOLIO
<PAGE>      PAGE  3
022 B000002 91-1627438
022 C000002    920798
022 D000002    913313
022 A000003 MERRILL LYNCH,PIERCE,FENNER & SMITH, INC.
022 B000003 13-5674085
022 C000003   1597038
022 D000003         0
022 A000004 LEHMAN BROTHERS, INC.
022 B000004 13-2518466
022 C000004   1010795
022 D000004         0
022 A000005 SSGA US TREASURY MONEY MARKET PORTFOLIO
022 B000005 91-1618599
022 C000005    232014
022 D000005    252097
022 A000006 HOUSEHOLD FINANCE CORP.
022 B000006 36-1239445
022 C000006    387338
022 D000006         0
022 A000007 HELLER FINANCIAL, INC.
022 B000007 36-1208070
022 C000007    180608
022 D000007         0
022 A000008 GOLDMAN SACHS & CO.
022 B000008 13-5108880
022 C000008    106210
022 D000008     11711
022 A000009 MORGAN STANLEY & CO., INC.
022 B000009 13-2655998
022 C000009     60236
022 D000009      1079
022 A000010 CS FIRST BOSTON GROUP
022 B000010 13-5659485
022 C000010     58162
022 D000010      2047
023 C000000   13781441
023 D000000    1410357
026 A000000 N
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026 H000000 Y
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039  00AA00 N
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<PAGE>      PAGE  4
041  00AA00 Y
049  00AA00 N
050  00AA00 N
051  00AA00 N
052  00AA00 N
053 A00AA00 N
054 A00AA00 Y
054 B00AA00 Y
054 C00AA00 Y
054 D00AA00 N
054 E00AA00 N
054 F00AA00 Y
054 G00AA00 Y
054 H00AA00 Y
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 Y
054 M00AA00 Y
054 N00AA00 N
054 O00AA00 Y
055 A00AA00 N
055 B00AA00 Y
056  00AA00 Y
057  00AA00 N
058 A00AA00 N
059  00AA00 Y
060 A00AA00 Y
060 B00AA00 Y
061  00AA00     1000
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077 A000000 Y
<PAGE>      PAGE  5
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080 A00AA00 UNITED PACIFIC INSURANCE CO.
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<PAGE>      PAGE  6
008 C000101 801-8254
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008 D030101 98185
015 A000101 STATE STREET BANK
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<PAGE>      PAGE  7
030 B000100  4.50
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<PAGE>      PAGE  8
066 F000100 N
066 G000100 N
067  000100 N
068 A000100 N
068 B000100 N
069  000100 N
070 A010100 Y
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070 B020100 N
070 C010100 N
070 C020100 N
070 D010100 Y
070 D020100 N
070 E010100 N
070 E020100 N
070 F010100 N
070 F020100 N
070 G010100 N
070 G020100 N
070 H010100 N
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 Y
070 J020100 N
070 K010100 Y
070 K020100 Y
070 L010100 Y
070 L020100 Y
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070 M020100 N
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070 N020100 N
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070 O020100 Y
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<PAGE>      PAGE  9
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<PAGE>      PAGE  10
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083 A000100 N
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008 A000201 SAFECO ASSET MANAGEMENT COMPANY
008 B000201 A
008 C000201 801-8254
008 D010201 SEATTLE
008 D020201 WA
008 D030201 98185
015 A000201 STATE STREET BANK
015 B000201 C
015 C010201 BOSTON
015 C020201 MA
015 C030201 02105
015 C040201 1713
015 E010201 X
024  000200 Y
025 A000201 MERRILL LYNCH,PIERCE,FENNER & SMITH, INC.
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025 C000201 E
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<PAGE>      PAGE  11
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<PAGE>      PAGE  12
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066 F000200 N
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070 A010200 Y
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070 F010200 N
070 F020200 N
070 G010200 N
070 G020200 N
070 H010200 N
070 H020200 N
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070 I020200 N
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<PAGE>      PAGE  13
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<PAGE>      PAGE  14
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<PAGE>      PAGE  15
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<PAGE>      PAGE  16
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<PAGE>      PAGE  17
068 B000300 N
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<PAGE>      PAGE  18
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<PAGE>      PAGE  19
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<PAGE>      PAGE  20
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<PAGE>      PAGE  21
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066 E000400 N
066 F000400 N
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068 A000400 N
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070 A010400 Y
070 A020400 N
070 B010400 N
070 B020400 N
070 C010400 N
070 C020400 N
070 D010400 Y
070 D020400 N
070 E010400 N
070 E020400 N
070 F010400 N
070 F020400 N
070 G010400 N
070 G020400 N
070 H010400 N
070 H020400 N
070 I010400 N
070 I020400 N
070 J010400 Y
070 J020400 N
070 K010400 Y
070 K020400 Y
070 L010400 Y
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070 M010400 N
070 M020400 N
070 N010400 N
<PAGE>      PAGE  22
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<PAGE>      PAGE  23
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008 D010502 GREENWICH
008 D020502 CT
008 D030502 06830
015 A000501 CHASE MANHATTEN BANK, N.A.
<PAGE>      PAGE  24
015 B000501 C
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015 C030501 11245
015 E010501 X
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<PAGE>      PAGE  25
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066 D000500 N
066 E000500 N
066 F000500 N
066 G000500 Y
067  000500 N
<PAGE>      PAGE  26
068 A000500 N
068 B000500 Y
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070 A010500 Y
070 A020500 N
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070 B020500 N
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070 C020500 N
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070 D020500 N
070 E010500 Y
070 E020500 N
070 F010500 Y
070 F020500 N
070 G010500 Y
070 G020500 N
070 H010500 Y
070 H020500 N
070 I010500 Y
070 I020500 N
070 J010500 Y
070 J020500 N
070 K010500 Y
070 K020500 N
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070 L020500 Y
070 M010500 Y
070 M020500 Y
070 N010500 N
070 N020500 N
070 O010500 Y
070 O020500 Y
070 P010500 N
070 P020500 N
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070 Q020500 N
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<PAGE>      PAGE  27
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<PAGE>      PAGE  28
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008 A000601 SAFECO ASSET MANAGEMENT COMPANY
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008 D010601 SEATTLE
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008 D030601 98185
015 A000601 STATE STREET BANK
015 B000601 C
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015 C030601 02105
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015 E010601 X
024  000600 Y
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<PAGE>      PAGE  29
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<PAGE>      PAGE  30
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070 J020600 N
<PAGE>      PAGE  31
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<PAGE>      PAGE  32
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008 C000701 801-8254
008 D010701 SEATTLE
008 D020701 WA
008 D030701 98185
<PAGE>      PAGE  33
015 A000701 STATE STREET BANK
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<PAGE>      PAGE  34
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<PAGE>      PAGE  35
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<PAGE>      PAGE  36
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<PAGE>      PAGE  37
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008 A000801 SAFECO ASSET MANAGEMENT COMPANY
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008 C000801 801-8254
008 D010801 SEATTLE
008 D020801 WA
008 D030801 98185
015 A000801 STATE STREET BANK
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015 C030801 02105
015 C040801 1713
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<PAGE>      PAGE  38
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028 G010800      2138
028 G020800        22
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028 G040800      1395
028 H000800        28
029  000800 Y
030 A000800      1
030 B000800  4.50
030 C000800  0.00
031 A000800      0
031 B000800      0
032  000800      1
033  000800      0
034  000800 Y
035  000800      0
036 A000800 N
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042 D000800   0
042 E000800   0
042 F000800   0
042 G000800   0
042 H000800   0
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044  000800      0
045  000800 Y
046  000800 N
047  000800 Y
048  000800  0.000
048 A010800   250000
048 A020800 0.750
048 B010800   250000
048 B020800 0.650
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048 C020800 0.000
048 D010800        0
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<PAGE>      PAGE  39
048 E020800 0.000
048 F010800        0
048 F020800 0.000
048 G010800        0
048 G020800 0.000
048 H010800        0
048 H020800 0.000
048 I010800        0
048 I020800 0.000
048 J010800        0
048 J020800 0.000
048 K010800   500000
048 K020800 0.550
066 A000800 Y
066 B000800 N
066 C000800 N
066 D000800 N
066 E000800 Y
066 F000800 N
066 G000800 N
067  000800 N
068 A000800 N
068 B000800 N
069  000800 N
070 A010800 Y
070 A020800 N
070 B010800 N
070 B020800 N
070 C010800 N
070 C020800 N
070 D010800 Y
070 D020800 N
070 E010800 N
070 E020800 N
070 F010800 N
070 F020800 N
070 G010800 N
070 G020800 N
070 H010800 N
070 H020800 N
070 I010800 N
070 I020800 N
070 J010800 Y
070 J020800 N
070 K010800 Y
070 K020800 Y
070 L010800 Y
070 L020800 N
070 M010800 N
070 M020800 N
070 N010800 N
<PAGE>      PAGE  40
070 N020800 N
070 O010800 Y
070 O020800 N
070 P010800 N
070 P020800 N
070 Q010800 N
070 Q020800 N
070 R010800 N
070 R020800 N
071 A000800      3138
071 B000800      2714
071 C000800     10029
071 D000800   28
072 A000800  6
072 B000800        7
072 C000800      109
072 D000800        0
072 E000800        0
072 F000800       38
072 G000800        0
072 H000800        0
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072 K000800        0
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072 O000800        0
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072 R000800        5
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072 T000800        0
072 U000800        2
072 V000800        0
072 W000800       10
072 X000800       61
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072 Z000800       55
072AA000800      371
072BB000800        0
072CC010800      254
072CC020800        0
072DD010800       54
072DD020800        1
072EE000800        0
073 A010800   0.0650
073 A020800   0.0320
073 B000800   0.0000
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<PAGE>      PAGE  41
074 B000800        0
074 C000800      391
074 D000800        0
074 E000800        0
074 F000800    10482
074 G000800        0
074 H000800        0
074 I000800        0
074 J000800        0
074 K000800        0
074 L000800       80
074 M000800        0
074 N000800    10953
074 O000800        0
074 P000800        0
074 Q000800        0
074 R010800        0
074 R020800        0
074 R030800        0
074 R040800      146
074 S000800        0
074 T000800    10807
074 U010800      852
074 U020800       53
074 V010800    11.95
074 V020800    11.94
074 W000800   0.0000
074 X000800      782
074 Y000800        0
075 A000800        0
075 B000800    10290
076  000800     0.00
083 A000800 N
083 B000800        0
084 A000800 N
084 B000800        0
085 A000800 Y
085 B000800 N
SIGNATURE   DAVID F. HILL                                
TITLE       PRESIDENT           
 

WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 7
   <NAME> SAFECO SMALL COMPANY FUND NO-LOAD CLASS
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 7
   <NAME> SAFECO SMALL COMPANY FUND CLASS A
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 7
   <NAME> SAFECO SMALL COMPANY FUND CLASS B
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
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<GROSS-EXPENSE>                                  282
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<PER-SHARE-NAV-BEGIN>                          14.07
<PER-SHARE-NII>                                (0.09)
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<PER-SHARE-DIVIDEND>                            0.00
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<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 2
   <NAME> SAFECO INCOME FUND NO-LOAD CLASS
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
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<INVESTMENTS-AT-VALUE>                       481,409
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<OTHER-INCOME>                                     0
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<NET-INVESTMENT-INCOME>                        5,044
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<EQUALIZATION>                                     0
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<NUMBER-OF-SHARES-REDEEMED>                   (1,596)
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<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
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<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                1,827
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<PER-SHARE-NAV-BEGIN>                          23.89
<PER-SHARE-NII>                                 0.29
<PER-SHARE-GAIN-APPREC>                         2.70
<PER-SHARE-DIVIDEND>                           (0.29)
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
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<EXPENSE-RATIO>                                 0.81
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 2
   <NAME> SAFECO INCOME FUND CLASS A
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                        367,578
<INVESTMENTS-AT-VALUE>                       481,409
<RECEIVABLES>                                  5,229
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                               486,638
<PAYABLE-FOR-SECURITIES>                       3,474
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                      3,263
<TOTAL-LIABILITIES>                            6,737
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                     300,194
<SHARES-COMMON-STOCK>                             63
<SHARES-COMMON-PRIOR>                             31
<ACCUMULATED-NII-CURRENT>                          0
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                       35,976
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                     113,831
<NET-ASSETS>                                   1,673
<DIVIDEND-INCOME>                              5,201
<INTEREST-INCOME>                              1,670
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                               1,827
<NET-INVESTMENT-INCOME>                        5,044
<REALIZED-GAINS-CURRENT>                      35,976
<APPREC-INCREASE-CURRENT>                     10,500
<NET-CHANGE-FROM-OPS>                         51,520
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                        (11)
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                           33
<NUMBER-OF-SHARES-REDEEMED>                       (2)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                        76,376
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                          1,400
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                1,827
<AVERAGE-NET-ASSETS>                           1,183
<PER-SHARE-NAV-BEGIN>                          24.02
<PER-SHARE-NII>                                 0.21
<PER-SHARE-GAIN-APPREC>                         2.62
<PER-SHARE-DIVIDEND>                           (0.21)
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            26.64
<EXPENSE-RATIO>                                 1.29
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 2
   <NAME> SAFECO INCOME FUND CLASS B
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                        367,578
<INVESTMENTS-AT-VALUE>                       481,409
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<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                               486,638
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<SENIOR-LONG-TERM-DEBT>                            0
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<TOTAL-LIABILITIES>                            6,737
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                     300,194
<SHARES-COMMON-STOCK>                             62
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<ACCUMULATED-NET-GAINS>                       35,976
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                     113,831
<NET-ASSETS>                                   1,665
<DIVIDEND-INCOME>                              5,201
<INTEREST-INCOME>                              1,670
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                               1,827
<NET-INVESTMENT-INCOME>                        5,044
<REALIZED-GAINS-CURRENT>                      35,976
<APPREC-INCREASE-CURRENT>                     10,500
<NET-CHANGE-FROM-OPS>                         51,520
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                         (6)
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                           30
<NUMBER-OF-SHARES-REDEEMED>                       (1)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                        76,376
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                          1,400
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                1,827
<AVERAGE-NET-ASSETS>                           1,150
<PER-SHARE-NAV-BEGIN>                          23.95
<PER-SHARE-NII>                                 0.12
<PER-SHARE-GAIN-APPREC>                         2.72
<PER-SHARE-DIVIDEND>                           (0.12)
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            26.67
<EXPENSE-RATIO>                                 2.01
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 5
   <NAME> SAFECO INTERNATIONAL FUND NO-LOAD CLASS
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
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<INVESTMENTS-AT-COST>                         13,992
<INVESTMENTS-AT-VALUE>                        18,072
<RECEIVABLES>                                    162
<ASSETS-OTHER>                                   734
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<TOTAL-ASSETS>                                18,968
<PAYABLE-FOR-SECURITIES>                         356
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<PAID-IN-CAPITAL-COMMON>                      14,714
<SHARES-COMMON-STOCK>                          1,313
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<ACCUMULATED-NII-CURRENT>                         65
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                         (287)
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                       4,112
<NET-ASSETS>                                  17,527
<DIVIDEND-INCOME>                                192
<INTEREST-INCOME>                                  9
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                                 136
<NET-INVESTMENT-INCOME>                           65
<REALIZED-GAINS-CURRENT>                        (287)
<APPREC-INCREASE-CURRENT>                      2,731
<NET-CHANGE-FROM-OPS>                          2,509
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                          522
<NUMBER-OF-SHARES-REDEEMED>                     (491)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                         3,169
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                          (55)
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                             94
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                  136
<AVERAGE-NET-ASSETS>                          16,386
<PER-SHARE-NAV-BEGIN>                          11.50
<PER-SHARE-NII>                                 0.18
<PER-SHARE-GAIN-APPREC>                         1.66
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            13.34
<EXPENSE-RATIO>                                 1.55
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 5
   <NAME> SAFECO INTERNATIONAL FUND CLASS A
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                         13,992
<INVESTMENTS-AT-VALUE>                        18,072
<RECEIVABLES>                                    162
<ASSETS-OTHER>                                   734
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                                18,968
<PAYABLE-FOR-SECURITIES>                         356
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                         63
<TOTAL-LIABILITIES>                              419
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                      14,714
<SHARES-COMMON-STOCK>                             32
<SHARES-COMMON-PRIOR>                             25
<ACCUMULATED-NII-CURRENT>                         65
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                         (287)
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                       4,112
<NET-ASSETS>                                     428
<DIVIDEND-INCOME>                                192
<INTEREST-INCOME>                                  9
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                                 136
<NET-INVESTMENT-INCOME>                           65
<REALIZED-GAINS-CURRENT>                        (287)
<APPREC-INCREASE-CURRENT>                      2,731
<NET-CHANGE-FROM-OPS>                          2,509
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                            7
<NUMBER-OF-SHARES-REDEEMED>                       (1)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                         3,169
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                          (55)
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                             94
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                  136
<AVERAGE-NET-ASSETS>                             347
<PER-SHARE-NAV-BEGIN>                          11.55
<PER-SHARE-NII>                                 0.13
<PER-SHARE-GAIN-APPREC>                         1.69
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            13.37
<EXPENSE-RATIO>                                 1.97
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 5
   <NAME> SAFECO INTERNATIONAL FUND CLASS B
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                         13,992
<INVESTMENTS-AT-VALUE>                        18,072
<RECEIVABLES>                                    162
<ASSETS-OTHER>                                   734
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                                18,968
<PAYABLE-FOR-SECURITIES>                         356
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                         63
<TOTAL-LIABILITIES>                              419
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                      14,714
<SHARES-COMMON-STOCK>                             45
<SHARES-COMMON-PRIOR>                             29
<ACCUMULATED-NII-CURRENT>                         65
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                         (287)
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                       4,112
<NET-ASSETS>                                     594
<DIVIDEND-INCOME>                                192
<INTEREST-INCOME>                                  9
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                                 136
<NET-INVESTMENT-INCOME>                           65
<REALIZED-GAINS-CURRENT>                        (287)
<APPREC-INCREASE-CURRENT>                      2,731
<NET-CHANGE-FROM-OPS>                          2,509
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                           17
<NUMBER-OF-SHARES-REDEEMED>                       (1)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                         3,169
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                          (55)
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                             94
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                  136
<AVERAGE-NET-ASSETS>                             458
<PER-SHARE-NAV-BEGIN>                          11.53
<PER-SHARE-NII>                                 0.08
<PER-SHARE-GAIN-APPREC>                         1.68
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            13.29
<EXPENSE-RATIO>                                 2.86
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 4
   <NAME> SAFECO NORTHWEST FUND NO-LOAD CLASS
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                         55,528
<INVESTMENTS-AT-VALUE>                        74,264
<RECEIVABLES>                                  1,362
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                                75,626
<PAYABLE-FOR-SECURITIES>                       1,527
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                        100
<TOTAL-LIABILITIES>                            1,627
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                      49,543
<SHARES-COMMON-STOCK>                          3,737
<SHARES-COMMON-PRIOR>                          3,734
<ACCUMULATED-NII-CURRENT>                       (222)
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                        5,942
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                      18,736
<NET-ASSETS>                                  69,522
<DIVIDEND-INCOME>                                161
<INTEREST-INCOME>                                 31
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                                 414
<NET-INVESTMENT-INCOME>                         (222)
<REALIZED-GAINS-CURRENT>                       5,942
<APPREC-INCREASE-CURRENT>                       (699)
<NET-CHANGE-FROM-OPS>                          5,021
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                          520
<NUMBER-OF-SHARES-REDEEMED>                     (516)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                         6,806
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                            272
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                  414
<AVERAGE-NET-ASSETS>                          69,416
<PER-SHARE-NAV-BEGIN>                          17.31
<PER-SHARE-NII>                                (0.05)
<PER-SHARE-GAIN-APPREC>                         1.34
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            18.60
<EXPENSE-RATIO>                                 1.10
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 4
   <NAME> SAFECO NORTHWEST FUND CLASS A
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                         55,528
<INVESTMENTS-AT-VALUE>                        74,264
<RECEIVABLES>                                  1,362
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                                75,626
<PAYABLE-FOR-SECURITIES>                       1,527
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                        100
<TOTAL-LIABILITIES>                            1,627
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                      49,543
<SHARES-COMMON-STOCK>                            109
<SHARES-COMMON-PRIOR>                             79
<ACCUMULATED-NII-CURRENT>                       (222)
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                        5,942
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                      18,736
<NET-ASSETS>                                   2,009
<DIVIDEND-INCOME>                                161
<INTEREST-INCOME>                                 31
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                                 414
<NET-INVESTMENT-INCOME>                         (222)
<REALIZED-GAINS-CURRENT>                       5,942
<APPREC-INCREASE-CURRENT>                       (699)
<NET-CHANGE-FROM-OPS>                          5,021
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                           46
<NUMBER-OF-SHARES-REDEEMED>                      (16)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                         6,806
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                            272
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                  414
<AVERAGE-NET-ASSETS>                           1,771
<PER-SHARE-NAV-BEGIN>                          17.25
<PER-SHARE-NII>                                (0.09)
<PER-SHARE-GAIN-APPREC>                         1.32
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            18.48
<EXPENSE-RATIO>                                 1.68
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 4
   <NAME> SAFECO NORTHWEST FUND CLASS B
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                         55,528
<INVESTMENTS-AT-VALUE>                        74,264
<RECEIVABLES>                                  1,362
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                                75,626
<PAYABLE-FOR-SECURITIES>                       1,527
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                        100
<TOTAL-LIABILITIES>                            1,627
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                      49,543
<SHARES-COMMON-STOCK>                            135
<SHARES-COMMON-PRIOR>                             70
<ACCUMULATED-NII-CURRENT>                       (222)
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                        5,942
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                      18,736
<NET-ASSETS>                                   2,468
<DIVIDEND-INCOME>                                161
<INTEREST-INCOME>                                 31
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                                 414
<NET-INVESTMENT-INCOME>                         (222)
<REALIZED-GAINS-CURRENT>                       5,942
<APPREC-INCREASE-CURRENT>                       (699)
<NET-CHANGE-FROM-OPS>                          5,021
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                           68
<NUMBER-OF-SHARES-REDEEMED>                       (3)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                         6,806
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                            272
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                  414
<AVERAGE-NET-ASSETS>                           1,886
<PER-SHARE-NAV-BEGIN>                          17.09
<PER-SHARE-NII>                                (0.12)
<PER-SHARE-GAIN-APPREC>                         1.29
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            18.26
<EXPENSE-RATIO>                                 2.24
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 3
   <NAME> SAFECO EQUITY FUND NO-LOAD CLASS
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                      1,352,851
<INVESTMENTS-AT-VALUE>                     1,836,143
<RECEIVABLES>                                 35,433
<ASSETS-OTHER>                                     1
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                             1,871,577
<PAYABLE-FOR-SECURITIES>                      15,043
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                     18,161
<TOTAL-LIABILITIES>                           33,204
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                   1,297,600
<SHARES-COMMON-STOCK>                         80,441
<SHARES-COMMON-PRIOR>                         76,277
<ACCUMULATED-NII-CURRENT>                          0
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                       57,481
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                     483,292
<NET-ASSETS>                               1,786,754
<DIVIDEND-INCOME>                             13,213
<INTEREST-INCOME>                              1,460
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                               6,288
<NET-INVESTMENT-INCOME>                        8,385
<REALIZED-GAINS-CURRENT>                      57,481
<APPREC-INCREASE-CURRENT>                    154,193
<NET-CHANGE-FROM-OPS>                        220,059
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                     (8,241)
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                       13,545
<NUMBER-OF-SHARES-REDEEMED>                   (9,730)
<SHARES-REINVESTED>                              349
<NET-CHANGE-IN-ASSETS>                       337,363
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                          4,262
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                6,288
<AVERAGE-NET-ASSETS>                       1,683,873
<PER-SHARE-NAV-BEGIN>                          19.54
<PER-SHARE-NII>                                 0.10
<PER-SHARE-GAIN-APPREC>                         2.67
<PER-SHARE-DIVIDEND>                           (0.10)
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            22.21
<EXPENSE-RATIO>                                 0.73
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 3
   <NAME> SAFECO EQUITY FUND CLASS A
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                      1,352,851
<INVESTMENTS-AT-VALUE>                     1,836,143
<RECEIVABLES>                                 35,433
<ASSETS-OTHER>                                     1
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                             1,871,577
<PAYABLE-FOR-SECURITIES>                      15,043
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                     18,161
<TOTAL-LIABILITIES>                           33,204
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                   1,297,600
<SHARES-COMMON-STOCK>                          1,871
<SHARES-COMMON-PRIOR>                            371
<ACCUMULATED-NII-CURRENT>                          0
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                       57,481
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                     483,292
<NET-ASSETS>                                  41,590
<DIVIDEND-INCOME>                             13,213
<INTEREST-INCOME>                              1,460
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                               6,288
<NET-INVESTMENT-INCOME>                        8,385
<REALIZED-GAINS-CURRENT>                      57,481
<APPREC-INCREASE-CURRENT>                    154,193
<NET-CHANGE-FROM-OPS>                        220,059
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                       (153)
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                        1,655
<NUMBER-OF-SHARES-REDEEMED>                     (161)
<SHARES-REINVESTED>                                7
<NET-CHANGE-IN-ASSETS>                       337,363
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                          4,262
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                6,288
<AVERAGE-NET-ASSETS>                          33,283
<PER-SHARE-NAV-BEGIN>                          19.55
<PER-SHARE-NII>                                 0.08
<PER-SHARE-GAIN-APPREC>                         2.68
<PER-SHARE-DIVIDEND>                           (0.08)
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            22.23
<EXPENSE-RATIO>                                 0.88
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 3
   <NAME> SAFECO EQUITY FUND CLASS B
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                      1,352,851
<INVESTMENTS-AT-VALUE>                     1,836,143
<RECEIVABLES>                                 35,433
<ASSETS-OTHER>                                     1
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                             1,871,577
<PAYABLE-FOR-SECURITIES>                      15,043
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                     18,161
<TOTAL-LIABILITIES>                           33,204
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                   1,297,600
<SHARES-COMMON-STOCK>                            453
<SHARES-COMMON-PRIOR>                            182
<ACCUMULATED-NII-CURRENT>                          0
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                       57,481
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                     483,292
<NET-ASSETS>                                  10,029
<DIVIDEND-INCOME>                             13,213
<INTEREST-INCOME>                              1,460
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                               6,288
<NET-INVESTMENT-INCOME>                        8,385
<REALIZED-GAINS-CURRENT>                      57,481
<APPREC-INCREASE-CURRENT>                    154,193
<NET-CHANGE-FROM-OPS>                        220,059
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                          287
<NUMBER-OF-SHARES-REDEEMED>                      (17)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                       337,363
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                          4,262
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                6,288
<AVERAGE-NET-ASSETS>                           6,347
<PER-SHARE-NAV-BEGIN>                          19.55
<PER-SHARE-NII>                                (0.02)
<PER-SHARE-GAIN-APPREC>                         2.61
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            22.14
<EXPENSE-RATIO>                                 1.97
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 1
   <NAME> SAFECO GROWTH FUND NO-LOAD CLASS
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                      1,505,823
<INVESTMENTS-AT-VALUE>                     1,657,604
<RECEIVABLES>                                 30,249
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                             1,687,853
<PAYABLE-FOR-SECURITIES>                      32,601
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                      9,440
<TOTAL-LIABILITIES>                           42,041
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                   1,429,109
<SHARES-COMMON-STOCK>                         61,352
<SHARES-COMMON-PRIOR>                         28,441
<ACCUMULATED-NII-CURRENT>                      1,835
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                      130,612
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                     151,781
<NET-ASSETS>                               1,611,927
<DIVIDEND-INCOME>                              3,387
<INTEREST-INCOME>                              2,738
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                               4,290
<NET-INVESTMENT-INCOME>                        1,835
<REALIZED-GAINS-CURRENT>                      63,088
<APPREC-INCREASE-CURRENT>                     67,524
<NET-CHANGE-FROM-OPS>                        132,447
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                       56,037
<NUMBER-OF-SHARES-REDEEMED>                  (23,126)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                     1,001,772
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                          3,197
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                4,290
<AVERAGE-NET-ASSETS>                       1,236,103
<PER-SHARE-NAV-BEGIN>                          22.45
<PER-SHARE-NII>                                 0.03
<PER-SHARE-GAIN-APPREC>                         3.79
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            26.27
<EXPENSE-RATIO>                                 0.69
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 1
   <NAME> SAFECO GROWTH FUND CLASS A
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                      1,505,823
<INVESTMENTS-AT-VALUE>                     1,657,604
<RECEIVABLES>                                 30,249
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                             1,687,853
<PAYABLE-FOR-SECURITIES>                      32,601
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                      9,440
<TOTAL-LIABILITIES>                           42,041
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                   1,429,109
<SHARES-COMMON-STOCK>                            921
<SHARES-COMMON-PRIOR>                            182
<ACCUMULATED-NII-CURRENT>                      1,835
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                      130,612
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                     151,781
<NET-ASSETS>                                  24,172
<DIVIDEND-INCOME>                              3,387
<INTEREST-INCOME>                              2,738
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                               4,290
<NET-INVESTMENT-INCOME>                        1,835
<REALIZED-GAINS-CURRENT>                      63,088
<APPREC-INCREASE-CURRENT>                     67,524
<NET-CHANGE-FROM-OPS>                        132,447
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                          769
<NUMBER-OF-SHARES-REDEEMED>                      (29)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                     1,001,772
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                          3,197
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                4,290
<AVERAGE-NET-ASSETS>                           8,754
<PER-SHARE-NAV-BEGIN>                          22.39
<PER-SHARE-NII>                                 0.00
<PER-SHARE-GAIN-APPREC>                         3.83
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            26.22
<EXPENSE-RATIO>                                 0.99
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 1
   <NAME> SAFECO GROWTH FUND CLASS B
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                      1,505,823
<INVESTMENTS-AT-VALUE>                     1,657,604
<RECEIVABLES>                                 30,249
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                             1,687,853
<PAYABLE-FOR-SECURITIES>                      32,601
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                      9,440
<TOTAL-LIABILITIES>                           42,041
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                   1,429,109
<SHARES-COMMON-STOCK>                            376
<SHARES-COMMON-PRIOR>                             63
<ACCUMULATED-NII-CURRENT>                      1,835
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                      130,612
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                     151,781
<NET-ASSETS>                                   9,713
<DIVIDEND-INCOME>                              3,387
<INTEREST-INCOME>                              2,738
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                               4,290
<NET-INVESTMENT-INCOME>                        1,835
<REALIZED-GAINS-CURRENT>                      63,088
<APPREC-INCREASE-CURRENT>                     67,524
<NET-CHANGE-FROM-OPS>                        132,447
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                          322
<NUMBER-OF-SHARES-REDEEMED>                       (9)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                     1,001,772
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                          3,197
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                4,290
<AVERAGE-NET-ASSETS>                           5,006
<PER-SHARE-NAV-BEGIN>                          22.19
<PER-SHARE-NII>                                (0.05)
<PER-SHARE-GAIN-APPREC>                         3.71
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            25.85
<EXPENSE-RATIO>                                 1.83
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 6
   <NAME> SAFECO BALANCED FUND NO-LOAD CLASS
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                         17,155
<INVESTMENTS-AT-VALUE>                        18,420
<RECEIVABLES>                                    222
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                                18,642
<PAYABLE-FOR-SECURITIES>                           0
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                        156
<TOTAL-LIABILITIES>                              156
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                      16,497
<SHARES-COMMON-STOCK>                          1,412
<SHARES-COMMON-PRIOR>                          1,177
<ACCUMULATED-NII-CURRENT>                          0
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                          724
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                       1,265
<NET-ASSETS>                                  17,193
<DIVIDEND-INCOME>                                106
<INTEREST-INCOME>                                220
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                                 104
<NET-INVESTMENT-INCOME>                          222
<REALIZED-GAINS-CURRENT>                         724
<APPREC-INCREASE-CURRENT>                          4
<NET-CHANGE-FROM-OPS>                            950
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                       (213)
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                          441
<NUMBER-OF-SHARES-REDEEMED>                     (217)
<SHARES-REINVESTED>                               11
<NET-CHANGE-IN-ASSETS>                         4,283
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                             62
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                  104
<AVERAGE-NET-ASSETS>                          15,771
<PER-SHARE-NAV-BEGIN>                          11.61
<PER-SHARE-NII>                                 0.16
<PER-SHARE-GAIN-APPREC>                         0.57
<PER-SHARE-DIVIDEND>                           (0.16)
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            12.18
<EXPENSE-RATIO>                                 1.21
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 6
   <NAME> SAFECO BALANCED FUND CLASS A
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                         17,155
<INVESTMENTS-AT-VALUE>                        18,420
<RECEIVABLES>                                    222
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                                18,642
<PAYABLE-FOR-SECURITIES>                           0
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                        156
<TOTAL-LIABILITIES>                              156
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                      16,497
<SHARES-COMMON-STOCK>                             41
<SHARES-COMMON-PRIOR>                             18
<ACCUMULATED-NII-CURRENT>                          0
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                          724
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                       1,265
<NET-ASSETS>                                     501
<DIVIDEND-INCOME>                                106
<INTEREST-INCOME>                                220
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                                 104
<NET-INVESTMENT-INCOME>                          222
<REALIZED-GAINS-CURRENT>                         724
<APPREC-INCREASE-CURRENT>                          4
<NET-CHANGE-FROM-OPS>                            950
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                         (5)
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                           33
<NUMBER-OF-SHARES-REDEEMED>                      (10)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                         4,283
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                             62
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                  104
<AVERAGE-NET-ASSETS>                             451
<PER-SHARE-NAV-BEGIN>                          11.60
<PER-SHARE-NII>                                 0.13
<PER-SHARE-GAIN-APPREC>                         0.58
<PER-SHARE-DIVIDEND>                           (0.13)
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            12.18
<EXPENSE-RATIO>                                 1.58
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 6
   <NAME> SAFECO BALANCED FUND CLASS B
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                         17,155
<INVESTMENTS-AT-VALUE>                        18,420
<RECEIVABLES>                                    222
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                                18,642
<PAYABLE-FOR-SECURITIES>                           0
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                        156
<TOTAL-LIABILITIES>                              156
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                      16,497
<SHARES-COMMON-STOCK>                             65
<SHARES-COMMON-PRIOR>                             29
<ACCUMULATED-NII-CURRENT>                          0
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                          724
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                       1,265
<NET-ASSETS>                                     792
<DIVIDEND-INCOME>                                106
<INTEREST-INCOME>                                220
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                                 104
<NET-INVESTMENT-INCOME>                          222
<REALIZED-GAINS-CURRENT>                         724
<APPREC-INCREASE-CURRENT>                          4
<NET-CHANGE-FROM-OPS>                            950
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                         (4)
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                           39
<NUMBER-OF-SHARES-REDEEMED>                       (3)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                         4,283
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
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<GROSS-EXPENSE>                                  104
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<EXPENSE-RATIO>                                 2.34
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 8
   <NAME> SAFECO US VALUE FUND NO-LOAD CLASS
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                          9,959
<INVESTMENTS-AT-VALUE>                        10,873
<RECEIVABLES>                                     80
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<REALIZED-GAINS-CURRENT>                         371
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<NET-CHANGE-FROM-OPS>                            680
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                        (54)
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                          157
<NUMBER-OF-SHARES-REDEEMED>                     (116)
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 8
   <NAME> SAFECO US VALUE FUND CLASS A
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                          9,959
<INVESTMENTS-AT-VALUE>                        10,873
<RECEIVABLES>                                     80
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<TOTAL-ASSETS>                                10,953
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<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                        146
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<APPREC-INCREASE-CURRENT>                        254
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<DISTRIBUTIONS-OF-INCOME>                         (1)
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<PER-SHARE-DIVIDEND>                           (0.03)
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            11.94
<EXPENSE-RATIO>                                 1.72
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000867579
<NAME> SAFECO COMMON STOCK TRUST
<SERIES>
   <NUMBER> 8
   <NAME> SAFECO US VALUE FUND CLASS B
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   SEMI-ANNUAL
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<EXCHANGE-RATE>                                    1
<INVESTMENTS-AT-COST>                          9,959
<INVESTMENTS-AT-VALUE>                        10,873
<RECEIVABLES>                                     80
<ASSETS-OTHER>                                     0
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                                10,953
<PAYABLE-FOR-SECURITIES>                           0
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                        146
<TOTAL-LIABILITIES>                              146
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                       9,522
<SHARES-COMMON-STOCK>                             39
<SHARES-COMMON-PRIOR>                             20
<ACCUMULATED-NII-CURRENT>                          0
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<ACCUMULATED-NET-GAINS>                          371
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                         914
<NET-ASSETS>                                     466
<DIVIDEND-INCOME>                                109
<INTEREST-INCOME>                                  7
<OTHER-INCOME>                                     0
<EXPENSES-TOTAL>                                  61
<NET-INVESTMENT-INCOME>                           55
<REALIZED-GAINS-CURRENT>                         371
<APPREC-INCREASE-CURRENT>                        254
<NET-CHANGE-FROM-OPS>                            680
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                           0
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                           19
<NUMBER-OF-SHARES-REDEEMED>                       (1)
<SHARES-REINVESTED>                                0
<NET-CHANGE-IN-ASSETS>                         1,388
<ACCUMULATED-NII-PRIOR>                            0
<ACCUMULATED-GAINS-PRIOR>                          0
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                             38
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                   61
<AVERAGE-NET-ASSETS>                             324
<PER-SHARE-NAV-BEGIN>                          11.18
<PER-SHARE-NII>                                (0.01)
<PER-SHARE-GAIN-APPREC>                         0.75
<PER-SHARE-DIVIDEND>                            0.00
<PER-SHARE-DISTRIBUTIONS>                       0.00
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            11.92
<EXPENSE-RATIO>                                 2.46
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                            0.00


</TABLE>


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