VANGUARD ADMIRAL FUNDS INC
NSAR-A, 1998-09-22
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<PAGE>      PAGE  1
000 A000000 07/31/98
000 C000000 0000891190
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 U
001 A000000 VANGUARD ADMIRAL FUNDS
001 B000000 811-7043
001 C000000 6106691000
002 A000000 100 VANGUARD BOULEVARD
002 B000000 MALVERN
002 C000000 PA
002 D010000 19355
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  4
007 C010100  1
007 C020100 ADMIRAL U.S. TREASURY MONEY MARKET PORTFOLIO
007 C030100 N
007 C010200  2
007 C020200 ADMIRAL SHORT-TERM U.S. TREASURY PORTFOLIO
007 C030200 N
007 C010300  3
007 C020300 ADMIRAL INTERMEDIATE-TERM U.S. TREASURY PORT.
007 C030300 N
007 C010400  4
007 C020400 ADMIRAL LONG-TERM U.S. TREASURY PORTFOLIO
007 C030400 N
007 C010500  5
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
010 A00AA01 THE VANGUARD GROUP, INC.
010 B00AA01 801-11953
010 C01AA01 MALVERN
010 C02AA01 PA
010 C03AA01 19355
012 A00AA01 THE VANGUARD GROUP, INC.
012 B00AA01 84-772
012 C01AA01 MALVERN
012 C02AA01 PA
012 C03AA01 19355
013 A00AA01 PRICEWATERHOUSECOOPERS LLP
<PAGE>      PAGE  2
013 B01AA01 PHILADELPHIA
013 B02AA01 PA
013 B03AA01 19103
014 A00AA01 VANGUARD MARKETING CORP.
014 B00AA01 8-21570
018  00AA00 Y
019 A00AA00 Y
019 B00AA00   97
019 C00AA00 VANGUARDGR
020 C000001      0
020 C000002      0
020 C000003      0
020 C000004      0
020 C000005      0
020 C000006      0
020 C000007      0
020 C000008      0
020 C000009      0
020 C000010      0
021  000000        0
022 A000001 J.P. MORGAN SECURITIES INC.
022 B000001 13-3224016
022 C000001   3561194
022 D000001   1136713
022 A000002 BARCLAY DE ZOETE WEDD SECURITIES, INC.
022 B000002 13-3410233
022 C000002   2872203
022 D000002    786336
022 A000003 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
022 B000003 13-2741729
022 C000003   1690118
022 D000003    836546
022 A000004 MERRILL LYNCH, PIERCE FENNER & SMITH INC.
022 B000004 13-5674085
022 C000004    861854
022 D000004   1251363
022 A000005 MORGAN STANLEY & CO., INC.
022 B000005 13-2655998
022 C000005   1355590
022 D000005    503676
022 A000006 PAINEWEBBER INC.
022 B000006 13-2638166
022 C000006    514520
022 D000006    545844
022 A000007 PRUDENTIAL SECURITIES INC.
022 B000007 22-2347336
022 C000007    659422
022 D000007    266046
022 A000008 THE VANGUARD GROUP, INC./POOLED CASH ACCOUNT
022 B000008 23-1945930
022 C000008    483109
<PAGE>      PAGE  3
022 D000008    415719
022 A000009 HSBC SECURITIES, INC.
022 B000009 13-2650272
022 C000009    631139
022 D000009    200059
022 A000010 ABN AMRO INC.
022 B000010 13-3227945
022 C000010    450074
022 D000010    378103
023 C000000   14620213
023 D000000    7536154
024  00AA00 N
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<PAGE>      PAGE  4
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<PAGE>      PAGE  5
077 N000000 N
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080 A00AA00 ICI MUTUAL INSURANCE COMPANY
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015 A000101 CORESTATES BANK, N.A.
015 B000101 C
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<PAGE>      PAGE  6
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070 I020100 N
070 J010100 N
070 J020100 N
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<PAGE>      PAGE  7
070 L020100 N
070 M010100 N
070 M020100 N
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070 Q020100 N
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<PAGE>      PAGE  8
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015 A000201 STATE STREET BANK AND TRUST COMPANY
015 B000201 C
015 C010201 BOSTON
015 C020201 MA
015 C030201 02110
015 E010201 X
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<PAGE>      PAGE  9
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062 N000200  11.4
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062 R000200  -0.5
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063 B000200  2.7
064 A000200 Y
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070 A010200 Y
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070 C010200 Y
070 C020200 N
070 D010200 N
070 D020200 N
070 E010200 Y
<PAGE>      PAGE  10
070 E020200 Y
070 F010200 N
070 F020200 N
070 G010200 Y
070 G020200 N
070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 Y
070 J020200 Y
070 K010200 N
070 K020200 N
070 L010200 N
070 L020200 N
070 M010200 N
070 M020200 N
070 N010200 Y
070 N020200 Y
070 O010200 Y
070 O020200 N
070 P010200 Y
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070 Q010200 N
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<PAGE>      PAGE  11
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<PAGE>      PAGE  12
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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
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<PAGE>      PAGE  18
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SIGNATURE   GARY P. SOURA                                
TITLE       MANAGER             
 


<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000891190
<NAME> VANGUARD ADMIRAL FUNDS
<SERIES>
   <NUMBER> 01
   <NAME> ADMIRAL U.S. TREASURY MONEY MARKET PORTFOLIO
<MULTIPLIER> 1000
<CURRENCY> US
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JAN-31-1999
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000891190
<NAME> VANGUARD ADMIRAL FUNDS
<SERIES>
   <NUMBER> 02
   <NAME> ADMIRAL SHORT-TERM U.S. TREASURY PORTFOLIO
<MULTIPLIER> 1000
<CURRENCY> US
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JAN-31-1999
<PERIOD-START>                             FEB-01-1998
<PERIOD-END>                               JUL-31-1998
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                           911948
<INVESTMENTS-AT-VALUE>                          914218
<RECEIVABLES>                                    16084
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<EXPENSE-RATIO>                                   0.15
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000891190
<NAME> VANGUARD ADMIRAL FUNDS
<SERIES>
   <NUMBER> 03
   <NAME> ADMIRAL INTERMEDIATE-TERM U.S. TREASURY PORTFOLIO
<MULTIPLIER> 1000
<CURRENCY> US
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JAN-31-1999
<PERIOD-START>                             FEB-01-1998
<PERIOD-END>                               JUL-31-1998
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                          1105049
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000891190
<NAME> VANGUARD ADMIRAL FUNDS
<SERIES>
   <NUMBER> 04
   <NAME> ADMIRAL LONG-TERM U.S. TREASURY PORTFOLIO
<MULTIPLIER> 1000
<CURRENCY> US
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JAN-31-1999
<PERIOD-START>                             FEB-01-1998
<PERIOD-END>                               JUL-31-1998
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<SHARES-REINVESTED>                                711
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<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                        (763)
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<INTEREST-EXPENSE>                                   0
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<AVERAGE-NET-ASSETS>                            358135
<PER-SHARE-NAV-BEGIN>                            11.12
<PER-SHARE-NII>                                  0.330
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<EXPENSE-RATIO>                                   0.15
<AVG-DEBT-OUTSTANDING>                               0
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</TABLE>


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