<PAGE> PAGE 1
000 A000000 06/30/98
000 C000000 0000036405
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 INDEX TRUST
001 B000000 811-2652
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 9
007 C010100 1
007 C020100 500 PORTFOLIO
007 C030100 N
007 C010200 2
007 C020200 EXTENDED MARKET PORTFOLIO
007 C030200 N
007 C010300 3
007 C020300 TOTAL STOCK MARKET PORTFOLIO
007 C030300 N
007 C010400 4
007 C020400 VALUE PORTFOLIO
007 C030400 N
007 C010500 5
007 C020500 GROWTH PORTFOLIO
007 C030500 N
007 C010600 6
007 C020600 SMALL CAPITALIZATION STOCK PORTFOLIO
007 C030600 N
007 C010700 7
007 C020700 MID CAPITALIZATION STOCK PORTFOLIO
007 C030700 N
007 C010800 8
007 C020800 SMALL CAPITALIZATION VALUE STOCK PORTFOLIO
007 C030800 N
007 C010900 9
007 C020900 SMALL CAPITALIZATION GROWTH STOCK PORTFOLIO
007 C030900 N
007 C011000 10
014 A00AA01 VANGUARD MARKETING CORPORATION
<PAGE> PAGE 2
014 B00AA01 8-21570
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 97
019 C00AA00 VANGUARDGR
020 A000001 INVESTMENT TECHNOLOGY GROUP, INC.
020 B000001 95-4339369
020 C000001 1087
020 A000002 INSTINET CORPORATION
020 B000002 13-3443395
020 C000002 630
020 A000003 BEAR STEARNS & COS., INC.
020 B000003 13-3299429
020 C000003 580
020 A000004 SMITH BARNEY INC.
020 B000004 13-1912900
020 C000004 560
020 A000005 PAINEWEBBER INCORPORATED
020 B000005 13-2638166
020 C000005 436
020 A000006 MORGAN STANLEY & CO., INC.
020 B000006 13-2655998
020 C000006 422
020 A000007 GOLDMAN SACHS & CO.
020 B000007 13-5108880
020 C000007 182
020 A000008 WEEDEN & COMPANY
020 B000008 13-3364318
020 C000008 116
020 A000009 CREDIT SUISSE FIRST BOSTON CORP.
020 B000009 13-5659485
020 C000009 75
020 A000010 SBC WARBURG, INC.
020 B000010 13-3340045
020 C000010 74
021 000000 4489
022 A000001 THE VANGUARD GROUP, INC./POOLED CASH ACCT.
022 B000001 23-1945930
022 C000001 3516092
022 D000001 4040702
022 A000002 TROSTER SINGER
022 B000002 13-5515160
022 C000002 768931
022 D000002 3192
022 A000003 GROWTH PORTFOLIO/VANGUARD INDEX TRUST
022 B000003 23-2695174
022 C000003 219561
022 D000003 178311
022 A000004 VALUE PORTFOLIO/VANGUARD INDEX TRUST
022 B000004 23-2695173
022 C000004 175588
<PAGE> PAGE 3
022 D000004 222061
022 A000005 VANGUARD INSTITUTIONAL INDEX FUND
022 B000005 23-2601141
022 C000005 259931
022 D000005 28944
022 A000006 MORGAN STANLEY & CO. INCORPORATED
022 B000006 13-2655998
022 C000006 246384
022 D000006 1735
022 A000007 GOLDMAN SACHS & CO.
022 B000007 13-5108880
022 C000007 227368
022 D000007 4086
022 A000008 EXTENDED MARKET PORTFOLIO/VANGUARD INDEX TR.
022 B000008 23-2482430
022 C000008 101812
022 D000008 7700
022 A000009 500 PORTFOLIO/VANGUARD INDEX TRUST
022 B000009 23-1999755
022 C000009 5836
022 D000009 100440
022 A000010 ITT CORP.
022 C000010 0
022 D000010 88479
023 C000000 6134521
023 D000000 5050355
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
029 00AA00 N
030 A00AA00 0
030 B00AA00 0.00
030 C00AA00 0.00
058 A00AA00 N
059 00AA00 Y
060 A00AA00 Y
060 B00AA00 Y
061 00AA00 3000
062 A00AA00 N
062 B00AA00 0.0
062 C00AA00 0.0
062 D00AA00 0.0
062 E00AA00 0.0
062 F00AA00 0.0
062 G00AA00 0.0
<PAGE> PAGE 4
062 H00AA00 0.0
062 I00AA00 0.0
062 J00AA00 0.0
062 K00AA00 0.0
062 L00AA00 0.0
062 M00AA00 0.0
062 N00AA00 0.0
062 O00AA00 0.0
062 P00AA00 0.0
062 Q00AA00 0.0
062 R00AA00 0.0
063 A00AA00 0
063 B00AA00 0.0
077 A000000 N
078 000000 N
080 A00AA00 ICI MUTUAL INSURANCE COMPANY
080 C00AA00 300000
081 A00AA00 Y
081 B00AA00 103
082 A00AA00 N
082 B00AA00 0
083 A00AA00 N
083 B00AA00 0
084 A00AA00 N
084 B00AA00 0
085 A00AA00 Y
085 B00AA00 N
024 000100 Y
025 A000101 MORGAN STANLEY & CO., INC.
025 B000101 13-2655998
025 C000101 E
025 D000101 391535
025 A000102 BEAR STEARNS & CO. INC.
025 B000102 13-3299429
025 C000102 E
025 D000102 41979
025 D000103 0
025 D000104 0
025 D000105 0
025 D000106 0
025 D000107 0
025 D000108 0
028 A010100 1571525
028 A020100 0
028 A030100 0
028 A040100 783880
028 B010100 1519056
028 B020100 0
028 B030100 0
028 B040100 585420
028 C010100 1951894
<PAGE> PAGE 5
028 C020100 207851
028 C030100 0
028 C040100 785256
028 D010100 2213214
028 D020100 9
028 D030100 0
028 D040100 944231
028 E010100 1399267
028 E020100 23
028 E030100 0
028 E040100 661817
028 F010100 1996153
028 F020100 149093
028 F030100 0
028 F040100 1032761
028 G010100 10651109
028 G020100 356976
028 G030100 0
028 G040100 4793365
028 H000100 0
071 A000100 7897459
071 B000100 1174089
071 C000100 56619165
071 D000100 2
072 A000100 6
072 B000100 23086
072 C000100 420319
072 D000100 0
072 E000100 0
072 F000100 51
072 G000100 20330
072 H000100 0
072 I000100 22091
072 J000100 100
072 K000100 0
072 L000100 856
072 M000100 52
072 N000100 0
072 O000100 0
072 P000100 0
072 Q000100 0
072 R000100 23
072 S000100 0
072 T000100 7999
072 U000100 0
072 V000100 140
072 W000100 0
072 X000100 51642
072 Y000100 0
072 Z000100 391763
072AA000100 765102
<PAGE> PAGE 6
072BB000100 27014
072CC010100 7967144
072CC020100 0
072DD010100 319067
072DD020100 0
072EE000100 69301
073 A010100 0.5400
073 A020100 0.0000
073 B000100 0.1200
073 C000100 0.0000
074 A000100 0
074 B000100 205941
074 C000100 38942
074 D000100 0
074 E000100 0
074 F000100 64057960
074 G000100 0
074 H000100 0
074 I000100 11969
074 J000100 164718
074 K000100 0
074 L000100 799066
074 M000100 0
074 N000100 65278596
074 O000100 654188
074 P000100 12130
074 Q000100 0
074 R010100 0
074 R020100 0
074 R030100 0
074 R040100 331308
074 S000100 0
074 T000100 64280970
074 U010100 610462
074 U020100 0
074 V010100 105.30
074 V020100 0.00
074 W000100 0.0000
074 X000100 1668113
074 Y000100 38942
075 A000100 0
075 B000100 57285612
076 000100 0.00
025 A000201 BEAR, STEARNS & CO. INC.
025 B000201 13-3299429
025 C000201 E
025 D000201 5844
025 A000202 INVESTMENT TECHNOLOGY GROUP, INC.
025 B000202 95-4339369
025 C000202 E
025 D000202 1252
<PAGE> PAGE 7
025 A000203 PAINEWEBBER INCORPORATED
025 B000203 13-2638166
025 C000203 E
025 D000203 4957
025 D000204 0
025 D000205 0
025 D000206 0
025 D000207 0
025 D000208 0
028 A010200 64768
028 A020200 0
028 A030200 0
028 A040200 56539
028 B010200 88059
028 B020200 0
028 B030200 0
028 B040200 65850
028 C010200 116233
028 C020200 33670
028 C030200 0
028 C040200 75198
028 D010200 92041
028 D020200 0
028 D030200 0
028 D040200 34064
028 E010200 75555
028 E020200 0
028 E030200 0
028 E040200 52167
028 F010200 51393
028 F020200 0
028 F030200 0
028 F040200 148834
028 G010200 488049
028 G020200 33670
028 G030200 0
028 G040200 432652
028 H000200 0
055 A000200 N
055 B000200 N
056 000200 N
057 000200 N
066 A000200 Y
066 B000200 N
066 C000200 N
066 D000200 Y
066 E000200 N
066 F000200 N
066 G000200 N
067 000200 N
068 A000200 N
<PAGE> PAGE 8
068 B000200 N
069 000200 Y
070 A010200 Y
070 A020200 Y
070 B010200 Y
070 B020200 N
070 C010200 N
070 C020200 N
070 D010200 Y
070 D020200 N
070 E010200 N
070 E020200 N
070 F010200 Y
070 F020200 Y
070 G010200 Y
070 G020200 N
070 H010200 Y
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 Y
070 J020200 Y
070 K010200 Y
070 K020200 N
070 L010200 Y
070 L020200 Y
070 M010200 N
070 M020200 N
070 N010200 Y
070 N020200 Y
070 O010200 Y
070 O020200 N
070 P010200 N
070 P020200 N
070 Q010200 N
070 Q020200 N
070 R010200 N
070 R020200 N
071 A000200 406059
071 B000200 334937
071 C000200 3297092
071 D000200 10
072 A000200 6
072 B000200 5018
072 C000200 18877
072 D000200 0
072 E000200 0
072 F000200 34
072 G000200 1302
072 H000200 0
072 I000200 1624
<PAGE> PAGE 9
072 J000200 75
072 K000200 0
072 L000200 46
072 M000200 3
072 N000200 0
072 O000200 0
072 P000200 0
072 Q000200 0
072 R000200 5
072 S000200 0
072 T000200 462
072 U000200 0
072 V000200 9
072 W000200 0
072 X000200 3560
072 Y000200 0
072 Z000200 20335
072AA000200 158072
072BB000200 23094
072CC010200 128487
072CC020200 0
072DD010200 0
072DD020200 0
072EE000200 36432
073 A010200 0.0000
073 A020200 0.0000
073 B000200 0.3500
073 C000200 0.0000
074 A000200 0
074 B000200 367004
074 C000200 3090
074 D000200 0
074 E000200 0
074 F000200 3365063
074 G000200 0
074 H000200 0
074 I000200 693
074 J000200 48170
074 K000200 0
074 L000200 8991
074 M000200 0
074 N000200 3793011
074 O000200 8170
074 P000200 841
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 310086
074 S000200 0
074 T000200 3473914
<PAGE> PAGE 10
074 U010200 89217
074 U020200 15394
074 V010200 33.21
074 V020200 33.23
074 W000200 0.0000
074 X000200 95084
074 Y000200 3090
075 A000200 0
075 B000200 3405623
076 000200 0.00
024 000300 Y
025 A000301 MORGAN STANLEY & CO. INC.
025 B000301 13-2655998
025 C000301 E
025 D000301 40370
025 A000302 BEAR STEARNS & CO.
025 B000302 13-3299429
025 C000302 E
025 D000302 4969
025 A000303 PAINEWEBBER INCORPORATED
025 B000303 13-2638166
025 C000303 E
025 D000303 4461
025 A000304 DELETE
025 D000304 0
025 D000305 0
025 D000306 0
025 D000307 0
025 D000308 0
028 A010300 398187
028 A020300 0
028 A030300 0
028 A040300 106906
028 B010300 303627
028 B020300 0
028 B030300 0
028 B040300 70540
028 C010300 442939
028 C020300 31551
028 C030300 0
028 C040300 194018
028 D010300 389033
028 D020300 1
028 D030300 0
028 D040300 119425
028 E010300 309854
028 E020300 2
028 E030300 0
028 E040300 69505
028 F010300 337139
028 F020300 20110
<PAGE> PAGE 11
028 F030300 0
028 F040300 114793
028 G010300 2180779
028 G020300 51664
028 G030300 0
028 G040300 675187
028 H000300 0
071 A000300 1610961
071 B000300 61849
071 C000300 7616083
071 D000300 1
072 A000300 6
072 B000300 12873
072 C000300 52165
072 D000300 0
072 E000300 0
072 F000300 43
072 G000300 2595
072 H000300 0
072 I000300 3105
072 J000300 135
072 K000300 0
072 L000300 61
072 M000300 7
072 N000300 0
072 O000300 0
072 P000300 0
072 Q000300 0
072 R000300 7
072 S000300 0
072 T000300 1108
072 U000300 0
072 V000300 12
072 W000300 0
072 X000300 7073
072 Y000300 0
072 Z000300 57965
072AA000300 61705
072BB000300 9616
072CC010300 996882
072CC020300 0
072DD010300 31702
072DD020300 9550
072EE000300 14518
073 A010300 0.1200
073 A020300 0.1300
073 B000300 0.0450
073 C000300 0.0000
074 A000300 148
074 B000300 532002
074 C000300 15967
<PAGE> PAGE 12
074 D000300 0
074 E000300 0
074 F000300 8820853
074 G000300 0
074 H000300 0
074 I000300 1337
074 J000300 1033
074 K000300 0
074 L000300 51693
074 M000300 0
074 N000300 9423033
074 O000300 47831
074 P000300 1474
074 Q000300 0
074 R010300 0
074 R020300 0
074 R030300 0
074 R040300 168849
074 S000300 0
074 T000300 9204879
074 U010300 277379
074 U020300 77343
074 V010300 25.95
074 V020300 25.95
074 W000300 0.0000
074 X000300 176030
074 Y000300 15967
075 A000300 0
075 B000300 8006363
076 000300 0.00
024 000400 Y
025 A000401 MORGAN STANLEY & CO., INC.
025 B000401 13-2655998
025 C000401 E
025 D000401 29295
025 A000402 BEAR STEARNS & CO., INC.
025 B000402 13-3299429
025 C000402 E
025 D000402 2844
025 D000403 0
025 D000404 0
025 D000405 0
025 D000406 0
025 D000407 0
025 D000408 0
028 A010400 63495
028 A020400 0
028 A030400 0
028 A040400 34746
028 B010400 62981
028 B020400 0
<PAGE> PAGE 13
028 B030400 0
028 B040400 30433
028 C010400 112272
028 C020400 38393
028 C030400 0
028 C040400 34327
028 D010400 101944
028 D020400 0
028 D030400 0
028 D040400 41766
028 E010400 72076
028 E020400 0
028 E030400 0
028 E040400 30769
028 F010400 63448
028 F020400 6281
028 F030400 0
028 F040400 34069
028 G010400 476216
028 G020400 44674
028 G030400 0
028 G040400 206110
028 H000400 0
066 A000400 Y
066 B000400 N
066 C000400 N
066 D000400 N
066 E000400 Y
066 F000400 N
066 G000400 N
067 000400 N
068 A000400 N
068 B000400 N
069 000400 Y
071 A000400 554094
071 B000400 265310
071 C000400 2060324
071 D000400 13
072 A000400 6
072 B000400 252
072 C000400 19670
072 D000400 0
072 E000400 0
072 F000400 17
072 G000400 694
072 H000400 0
072 I000400 1191
072 J000400 17
072 K000400 0
072 L000400 36
072 M000400 2
<PAGE> PAGE 14
072 N000400 0
072 O000400 0
072 P000400 0
072 Q000400 0
072 R000400 5
072 S000400 0
072 T000400 300
072 U000400 0
072 V000400 6
072 W000400 0
072 X000400 2268
072 Y000400 0
072 Z000400 17654
072AA000400 68275
072BB000400 7886
072CC010400 147599
072CC020400 0
072DD010400 13440
072DD020400 0
072EE000400 34906
073 A010400 0.1400
073 A020400 0.0000
073 B000400 0.3800
073 C000400 0.0000
074 A000400 0
074 B000400 2483
074 C000400 399
074 D000400 0
074 E000400 0
074 F000400 2281979
074 G000400 0
074 H000400 0
074 I000400 441
074 J000400 232103
074 K000400 0
074 L000400 8353
074 M000400 0
074 N000400 2525758
074 O000400 225081
074 P000400 429
074 Q000400 0
074 R010400 0
074 R020400 0
074 R030400 0
074 R040400 12631
074 S000400 0
074 T000400 2287617
074 U010400 100131
074 U020400 0
074 V010400 22.85
074 V020400 0.00
<PAGE> PAGE 15
074 W000400 0.0000
074 X000400 84029
074 Y000400 399
075 A000400 0
075 B000400 2068196
076 000400 0.00
024 000500 N
025 A000501 MORGAN STANLEY, DEAN WITTER, DISCOVER & CO.
025 B000501 13-2655998
025 C000501 E
025 D000501 21403
028 A010500 167108
028 A020500 0
028 A030500 0
028 A040500 46072
028 B010500 231561
028 B020500 0
028 B030500 0
028 B040500 32909
028 C010500 291313
028 C020500 5782
028 C030500 0
028 C040500 41156
028 D010500 314430
028 D020500 0
028 D030500 0
028 D040500 53612
028 E010500 219384
028 E020500 0
028 E030500 0
028 E040500 65797
028 F010500 222200
028 F020500 6814
028 F030500 0
028 F040500 52318
028 G010500 1445996
028 G020500 12596
028 G030500 0
028 G040500 291864
028 H000500 0
071 A000500 1543154
071 B000500 355927
071 C000500 3240654
071 D000500 11
072 A000500 6
072 B000500 876
072 C000500 17758
072 D000500 0
072 E000500 0
072 F000500 17
072 G000500 1257
<PAGE> PAGE 16
072 H000500 0
072 I000500 1689
072 J000500 17
072 K000500 0
072 L000500 59
072 M000500 3
072 N000500 0
072 O000500 0
072 P000500 0
072 Q000500 0
072 R000500 5
072 S000500 0
072 T000500 479
072 U000500 0
072 V000500 11
072 W000500 0
072 X000500 3537
072 Y000500 0
072 Z000500 15097
072AA000500 57076
072BB000500 22612
072CC010500 597640
072CC020500 0
072DD010500 13774
072DD020500 29
072EE000500 0
073 A010500 0.1000
073 A020500 0.0500
073 B000500 0.0000
073 C000500 0.0000
074 A000500 1289
074 B000500 24641
074 C000500 799
074 D000500 0
074 E000500 0
074 F000500 4166968
074 G000500 0
074 H000500 0
074 I000500 728
074 J000500 342813
074 K000500 0
074 L000500 25669
074 M000500 0
074 N000500 4562907
074 O000500 392424
074 P000500 528
074 Q000500 0
074 R010500 0
074 R020500 0
074 R030500 0
074 R040500 4496
<PAGE> PAGE 17
074 S000500 0
074 T000500 4165459
074 U010500 150313
074 U020500 582
074 V010500 27.60
074 V020500 27.61
074 W000500 0.0000
074 X000500 164107
074 Y000500 799
075 A000500 0
075 B000500 3254514
076 000500 0.00
025 A000601 INVESTMENT TECHNOLOGY GROUP, INC.
025 B000601 95-4339369
025 C000601 E
025 D000601 871
028 A010600 68203
028 A020600 0
028 A030600 0
028 A040600 52093
028 B010600 112189
028 B020600 0
028 B030600 0
028 B040600 54335
028 C010600 117342
028 C020600 19211
028 C030600 0
028 C040600 55975
028 D010600 93133
028 D020600 0
028 D030600 0
028 D040600 53785
028 E010600 88994
028 E020600 0
028 E030600 0
028 E040600 58021
028 F010600 61756
028 F020600 0
028 F030600 0
028 F040600 57046
028 G010600 541617
028 G020600 19211
028 G030600 0
028 G040600 331255
028 H000600 0
055 A000600 N
055 B000600 N
056 000600 N
057 000600 N
066 A000600 Y
066 B000600 N
<PAGE> PAGE 18
066 C000600 Y
066 D000600 N
066 E000600 N
066 F000600 N
066 G000600 N
067 000600 N
068 A000600 N
068 B000600 N
069 000600 Y
070 A010600 Y
070 A020600 Y
070 B010600 Y
070 B020600 N
070 C010600 N
070 C020600 N
070 D010600 Y
070 D020600 N
070 E010600 N
070 E020600 N
070 F010600 Y
070 F020600 Y
070 G010600 Y
070 G020600 N
070 H010600 Y
070 H020600 N
070 I010600 N
070 I020600 N
070 J010600 Y
070 J020600 Y
070 K010600 Y
070 K020600 N
070 L010600 Y
070 L020600 Y
070 M010600 N
070 M020600 N
070 N010600 Y
070 N020600 Y
070 O010600 Y
070 O020600 N
070 P010600 N
070 P020600 N
070 Q010600 N
070 Q020600 N
070 R010600 N
070 R020600 N
071 A000600 877347
071 B000600 671212
071 C000600 2945702
071 D000600 23
072 A000600 6
072 B000600 4250
<PAGE> PAGE 19
072 C000600 19397
072 D000600 0
072 E000600 0
072 F000600 51
072 G000600 1278
072 H000600 0
072 I000600 1625
072 J000600 34
072 K000600 0
072 L000600 54
072 M000600 3
072 N000600 0
072 O000600 0
072 P000600 0
072 Q000600 0
072 R000600 5
072 S000600 0
072 T000600 452
072 U000600 0
072 V000600 10
072 W000600 0
072 X000600 3512
072 Y000600 0
072 Z000600 20135
072AA000600 228356
072BB000600 85337
072CC010600 0
072CC020600 39136
072DD010600 0
072DD020600 0
072EE000600 20824
073 A010600 0.0000
073 A020600 0.0000
073 B000600 0.1700
073 C000600 0.0000
074 A000600 0
074 B000600 237497
074 C000600 3191
074 D000600 0
074 E000600 0
074 F000600 3012560
074 G000600 0
074 H000600 0
074 I000600 616
074 J000600 90134
074 K000600 0
074 L000600 11695
074 M000600 0
074 N000600 3355693
074 O000600 81277
074 P000600 734
<PAGE> PAGE 20
074 Q000600 0
074 R010600 0
074 R020600 0
074 R030600 0
074 R040600 151621
074 S000600 0
074 T000600 3122061
074 U010600 118008
074 U020600 8470
074 V010600 24.68
074 V020600 24.70
074 W000600 0.0000
074 X000600 110598
074 Y000600 3191
075 A000600 0
075 B000600 3042882
076 000600 0.00
015 A000701 CORESTATES BANK
015 B000701 C
015 C010701 PHILADELPHIA
015 C020701 PA
015 C030701 19101
015 E010701 X
028 A010700 0
028 A020700 0
028 A030700 0
028 A040700 0
028 B010700 0
028 B020700 0
028 B030700 0
028 B040700 0
028 C010700 0
028 C020700 0
028 C030700 0
028 C040700 0
028 D010700 448
028 D020700 0
028 D030700 0
028 D040700 0
028 E010700 102594
028 E020700 0
028 E030700 0
028 E040700 440
028 F010700 16125
028 F020700 0
028 F030700 0
028 F040700 413
028 G010700 119167
028 G020700 0
028 G030700 0
028 G040700 853
<PAGE> PAGE 21
028 H000700 0
055 A000700 Y
055 B000700 N
056 000700 N
057 000700 N
066 A000700 Y
066 B000700 N
066 C000700 N
066 D000700 Y
066 E000700 N
066 F000700 N
066 G000700 N
067 000700 N
068 A000700 N
068 B000700 N
069 000700 Y
070 A010700 Y
070 A020700 Y
070 B010700 Y
070 B020700 N
070 C010700 N
070 C020700 N
070 D010700 Y
070 D020700 N
070 E010700 N
070 E020700 N
070 F010700 Y
070 F020700 Y
070 G010700 Y
070 G020700 N
070 H010700 Y
070 H020700 N
070 I010700 N
070 I020700 N
070 J010700 Y
070 J020700 N
070 K010700 Y
070 K020700 N
070 L010700 Y
070 L020700 Y
070 M010700 N
070 M020700 N
070 N010700 Y
070 N020700 Y
070 O010700 Y
070 O020700 N
070 P010700 N
070 P020700 N
070 Q010700 N
070 Q020700 N
070 R010700 N
<PAGE> PAGE 22
070 R020700 N
071 A000700 131969
071 B000700 13206
071 C000700 86979
071 D000700 15
072 A000700 6
072 B000700 106
072 C000700 119
072 D000700 0
072 E000700 0
072 F000700 0
072 G000700 10
072 H000700 0
072 I000700 17
072 J000700 0
072 K000700 0
072 L000700 0
072 M000700 0
072 N000700 0
072 O000700 0
072 P000700 0
072 Q000700 0
072 R000700 0
072 S000700 0
072 T000700 0
072 U000700 0
072 V000700 0
072 W000700 0
072 X000700 27
072 Y000700 0
072 Z000700 198
072AA000700 675
072BB000700 447
072CC010700 0
072CC020700 1561
072DD010700 0
072DD020700 0
072EE000700 0
073 A010700 0.0000
073 A020700 0.0000
073 B000700 0.0000
073 C000700 0.0000
074 A000700 0
074 B000700 1770
074 C000700 0
074 D000700 0
074 E000700 0
074 F000700 117057
074 G000700 0
074 H000700 0
074 I000700 21
<PAGE> PAGE 23
074 J000700 1404
074 K000700 0
074 L000700 833
074 M000700 0
074 N000700 121085
074 O000700 3513
074 P000700 2
074 Q000700 0
074 R010700 0
074 R020700 0
074 R030700 0
074 R040700 391
074 S000700 0
074 T000700 117179
074 U010700 10855
074 U020700 997
074 V010700 9.89
074 V020700 9.89
074 W000700 0.0000
074 X000700 6493
074 Y000700 0
075 A000700 0
075 B000700 66740
076 000700 0.00
015 A000801 CORESTATES BANK
015 B000801 C
015 C010801 PHILADELPHIA
015 C020801 PA
015 C030801 19101
015 E010801 X
028 A010800 0
028 A020800 0
028 A030800 0
028 A040800 0
028 B010800 0
028 B020800 0
028 B030800 0
028 B040800 0
028 C010800 0
028 C020800 0
028 C030800 0
028 C040800 0
028 D010800 743
028 D020800 0
028 D030800 0
028 D040800 0
028 E010800 84305
028 E020800 0
028 E030800 0
028 E040800 59
028 F010800 9397
<PAGE> PAGE 24
028 F020800 0
028 F030800 0
028 F040800 934
028 G010800 94445
028 G020800 0
028 G030800 0
028 G040800 993
028 H000800 0
055 A000800 N
055 B000800 N
056 000800 N
057 000800 N
066 A000800 Y
066 B000800 N
066 C000800 Y
066 D000800 N
066 E000800 N
066 F000800 N
066 G000800 N
067 000800 N
068 A000800 N
068 B000800 N
069 000800 Y
070 A010800 Y
070 A020800 Y
070 B010800 Y
070 B020800 N
070 C010800 N
070 C020800 N
070 D010800 Y
070 D020800 N
070 E010800 N
070 E020800 N
070 F010800 Y
070 F020800 Y
070 G010800 Y
070 G020800 N
070 H010800 Y
070 H020800 N
070 I010800 N
070 I020800 N
070 J010800 Y
070 J020800 N
070 K010800 Y
070 K020800 N
070 L010800 Y
070 L020800 Y
070 M010800 N
070 M020800 N
070 N010800 Y
070 N020800 Y
<PAGE> PAGE 25
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 117049
071 B000800 23092
071 C000800 70078
071 D000800 33
072 A000800 6
072 B000800 88
072 C000800 90
072 D000800 0
072 E000800 0
072 F000800 0
072 G000800 8
072 H000800 0
072 I000800 15
072 J000800 0
072 K000800 0
072 L000800 0
072 M000800 0
072 N000800 0
072 O000800 0
072 P000800 0
072 Q000800 0
072 R000800 0
072 S000800 0
072 T000800 0
072 U000800 0
072 V000800 0
072 W000800 0
072 X000800 23
072 Y000800 0
072 Z000800 155
072AA000800 847
072BB000800 889
072CC010800 0
072CC020800 1559
072DD010800 0
072DD020800 0
072EE000800 0
073 A010800 0.0000
073 A020800 0.0000
073 B000800 0.0000
073 C000800 0.0000
074 A000800 0
074 B000800 1278
<PAGE> PAGE 26
074 C000800 0
074 D000800 0
074 E000800 0
074 F000800 92195
074 G000800 0
074 H000800 0
074 I000800 14
074 J000800 17206
074 K000800 0
074 L000800 350
074 M000800 0
074 N000800 111043
074 O000800 18316
074 P000800 2
074 Q000800 0
074 R010800 0
074 R020800 0
074 R030800 0
074 R040800 719
074 S000800 0
074 T000800 92006
074 U010800 9347
074 U020800 0
074 V010800 9.84
074 V020800 0.00
074 W000800 0.0000
074 X000800 5457
074 Y000800 0
075 A000800 0
075 B000800 50720
076 000800 0.00
015 A000901 CORESTATES BANK
015 B000901 C
015 C010901 PHILADELPHIA
015 C020901 PA
015 C030901 19101
015 E010901 X
028 A010900 0
028 A020900 0
028 A030900 0
028 A040900 0
028 B010900 0
028 B020900 0
028 B030900 0
028 B040900 0
028 C010900 0
028 C020900 0
028 C030900 0
028 C040900 0
028 D010900 368
028 D020900 0
<PAGE> PAGE 27
028 D030900 0
028 D040900 0
028 E010900 61311
028 E020900 0
028 E030900 0
028 E040900 65
028 F010900 4267
028 F020900 0
028 F030900 0
028 F040900 828
028 G010900 65946
028 G020900 0
028 G030900 0
028 G040900 893
028 H000900 0
055 A000900 Y
055 B000900 N
056 000900 N
057 000900 N
066 A000900 Y
066 B000900 N
066 C000900 Y
066 D000900 N
066 E000900 N
066 F000900 N
066 G000900 N
067 000900 N
068 A000900 N
068 B000900 N
069 000900 Y
070 A010900 Y
070 A020900 Y
070 B010900 Y
070 B020900 N
070 C010900 N
070 C020900 N
070 D010900 Y
070 D020900 N
070 E010900 N
070 E020900 N
070 F010900 Y
070 F020900 Y
070 G010900 Y
070 G020900 N
070 H010900 Y
070 H020900 N
070 I010900 N
070 I020900 N
070 J010900 Y
070 J020900 N
070 K010900 Y
<PAGE> PAGE 28
070 K020900 N
070 L010900 Y
070 L020900 Y
070 M010900 N
070 M020900 N
070 N010900 Y
070 N020900 Y
070 O010900 Y
070 O020900 N
070 P010900 N
070 P020900 N
070 Q010900 N
070 Q020900 N
070 R010900 N
070 R020900 N
071 A000900 87200
071 B000900 21707
071 C000900 62055
071 D000900 35
072 A000900 6
072 B000900 64
072 C000900 41
072 D000900 0
072 E000900 0
072 F000900 0
072 G000900 6
072 H000900 0
072 I000900 11
072 J000900 0
072 K000900 0
072 L000900 0
072 M000900 0
072 N000900 0
072 O000900 0
072 P000900 0
072 Q000900 0
072 R000900 0
072 S000900 0
072 T000900 0
072 U000900 0
072 V000900 0
072 W000900 0
072 X000900 17
072 Y000900 0
072 Z000900 88
072AA000900 549
072BB000900 1412
072CC010900 0
072CC020900 693
072DD010900 0
072DD020900 0
<PAGE> PAGE 29
072EE000900 0
073 A010900 0.0000
073 A020900 0.0000
073 B000900 0.0000
073 C000900 0.0000
074 A000900 0
074 B000900 954
074 C000900 0
074 D000900 0
074 E000900 0
074 F000900 63741
074 G000900 0
074 H000900 0
074 I000900 14
074 J000900 9914
074 K000900 0
074 L000900 302
074 M000900 0
074 N000900 74925
074 O000900 10384
074 P000900 1
074 Q000900 0
074 R010900 0
074 R020900 0
074 R030900 0
074 R040900 955
074 S000900 0
074 T000900 63585
074 U010900 6508
074 U020900 0
074 V010900 9.77
074 V020900 0.00
074 W000900 0.0000
074 X000900 4375
074 Y000900 0
075 A000900 0
075 B000900 35946
076 000900 0.00
SIGNATURE GARY P. SOURA
TITLE MANAGER
<TABLE> <S> <C>
<ARTICLE> 6
<RESTATED>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 01
<NAME> 500 PORTFOLIO
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 38377522
<INVESTMENTS-AT-VALUE> 64302843
<RECEIVABLES> 963784
<ASSETS-OTHER> 11969
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 65278596
<PAYABLE-FOR-SECURITIES> 654188
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 343438
<TOTAL-LIABILITIES> 997626
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 38127951
<SHARES-COMMON-STOCK> 610462
<SHARES-COMMON-PRIOR> 547990
<ACCUMULATED-NII-CURRENT> 67567
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 154887
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 25930565
<NET-ASSETS> 64280970
<DIVIDEND-INCOME> 420319
<INTEREST-INCOME> 23086
<OTHER-INCOME> 0
<EXPENSES-NET> 51642
<NET-INVESTMENT-INCOME> 391763
<REALIZED-GAINS-CURRENT> 738088
<APPREC-INCREASE-CURRENT> 7967144
<NET-CHANGE-FROM-OPS> 9096995
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 319067
<DISTRIBUTIONS-OF-GAINS> 69301
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 107318
<NUMBER-OF-SHARES-REDEEMED> 48308
<SHARES-REINVESTED> 3462
<NET-CHANGE-IN-ASSETS> 14923347
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 44740
<OVERDISTRIB-NII-PRIOR> 5129
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 51
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 51642
<AVERAGE-NET-ASSETS> 57285612
<PER-SHARE-NAV-BEGIN> 90.07
<PER-SHARE-NII> 0.66
<PER-SHARE-GAIN-APPREC> 15.23
<PER-SHARE-DIVIDEND> 0.54
<PER-SHARE-DISTRIBUTIONS> 0.12
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 105.30
<EXPENSE-RATIO> 0.18
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 021
<NAME> EXTENDED MARKET PORTFOLIO-INVESTOR SHARES
<MULTIPLIER> 1000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 2694234
<INVESTMENTS-AT-VALUE> 3735157
<RECEIVABLES> 57161
<ASSETS-OTHER> 693
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 3793011
<PAYABLE-FOR-SECURITIES> 8170
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 310927
<TOTAL-LIABILITIES> 319097
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2276797
<SHARES-COMMON-STOCK> 89217
<SHARES-COMMON-PRIOR> 88529
<ACCUMULATED-NII-CURRENT> 19757
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 133519
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1043841
<NET-ASSETS> 2962450
<DIVIDEND-INCOME> 18877
<INTEREST-INCOME> 5018
<OTHER-INCOME> 0
<EXPENSES-NET> 3560
<NET-INVESTMENT-INCOME> 20335
<REALIZED-GAINS-CURRENT> 134978
<APPREC-INCREASE-CURRENT> 128487
<NET-CHANGE-FROM-OPS> 283800
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 30661
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 9415
<NUMBER-OF-SHARES-REDEEMED> 9569
<SHARES-REINVESTED> 842
<NET-CHANGE-IN-ASSETS> 336435
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 34973
<OVERDISTRIB-NII-PRIOR> 578
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 34
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3560
<AVERAGE-NET-ASSETS> 2890374
<PER-SHARE-NAV-BEGIN> 30.76
<PER-SHARE-NII> 0.19
<PER-SHARE-GAIN-APPREC> 2.61
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0.35
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 33.21
<EXPENSE-RATIO> 0.23
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 022
<NAME> EXTENDED MARKET PORTFOLIO-INSTITUTIONAL SHARES
<MULTIPLIER> 1000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 2694234
<INVESTMENTS-AT-VALUE> 3735157
<RECEIVABLES> 57161
<ASSETS-OTHER> 693
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 3793011
<PAYABLE-FOR-SECURITIES> 8170
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 310927
<TOTAL-LIABILITIES> 319097
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2276797
<SHARES-COMMON-STOCK> 15394
<SHARES-COMMON-PRIOR> 13482
<ACCUMULATED-NII-CURRENT> 19757
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 133519
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1043841
<NET-ASSETS> 511464
<DIVIDEND-INCOME> 18877
<INTEREST-INCOME> 5018
<OTHER-INCOME> 0
<EXPENSES-NET> 3560
<NET-INVESTMENT-INCOME> 20335
<REALIZED-GAINS-CURRENT> 134978
<APPREC-INCREASE-CURRENT> 128487
<NET-CHANGE-FROM-OPS> 283800
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 5771
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5488
<NUMBER-OF-SHARES-REDEEMED> 3730
<SHARES-REINVESTED> 154
<NET-CHANGE-IN-ASSETS> 336435
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 34973
<OVERDISTRIB-NII-PRIOR> 578
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 34
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3560
<AVERAGE-NET-ASSETS> 515249
<PER-SHARE-NAV-BEGIN> 30.76
<PER-SHARE-NII> 0.21
<PER-SHARE-GAIN-APPREC> 2.61
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0.35
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 33.23
<EXPENSE-RATIO> 0.10
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<RESTATED>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 031
<NAME> TOTAL STOCK MARKET PORTFOLIO-INVESTOR SHARES
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 6520940
<INVESTMENTS-AT-VALUE> 9368822
<RECEIVABLES> 52726
<ASSETS-OTHER> 1485
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 9423033
<PAYABLE-FOR-SECURITIES> 47831
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 170323
<TOTAL-LIABILITIES> 218154
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 6281685
<SHARES-COMMON-STOCK> 277379
<SHARES-COMMON-PRIOR> 224899
<ACCUMULATED-NII-CURRENT> 15757
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 49806
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 2857631
<NET-ASSETS> 7197786
<DIVIDEND-INCOME> 52165
<INTEREST-INCOME> 12873
<OTHER-INCOME> 0
<EXPENSES-NET> 7073
<NET-INVESTMENT-INCOME> 57965
<REALIZED-GAINS-CURRENT> 52089
<APPREC-INCREASE-CURRENT> 996882
<NET-CHANGE-FROM-OPS> 1106936
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 31702
<DISTRIBUTIONS-OF-GAINS> 11342
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 74279
<NUMBER-OF-SHARES-REDEEMED> 23361
<SHARES-REINVESTED> 1562
<NET-CHANGE-IN-ASSETS> 2608422
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 12235
<OVERDISTRIB-NII-PRIOR> 956
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 43
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7073
<AVERAGE-NET-ASSETS> 6241099
<PER-SHARE-NAV-BEGIN> 22.64
<PER-SHARE-NII> 0.168
<PER-SHARE-GAIN-APPREC> 3.307
<PER-SHARE-DIVIDEND> 0.120
<PER-SHARE-DISTRIBUTIONS> 0.045
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 25.95
<EXPENSE-RATIO> 0.20
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<RESTATED>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 032
<NAME> TOTAL STOCK MARKET PORTFOLIO-INSTITUTIONAL SHARES
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 6520940
<INVESTMENTS-AT-VALUE> 9368822
<RECEIVABLES> 52726
<ASSETS-OTHER> 1485
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 9423033
<PAYABLE-FOR-SECURITIES> 47831
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 170323
<TOTAL-LIABILITIES> 218154
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 6281685
<SHARES-COMMON-STOCK> 77343
<SHARES-COMMON-PRIOR> 66413
<ACCUMULATED-NII-CURRENT> 15757
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 49806
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 2857631
<NET-ASSETS> 2007093
<DIVIDEND-INCOME> 52165
<INTEREST-INCOME> 12873
<OTHER-INCOME> 0
<EXPENSES-NET> 7073
<NET-INVESTMENT-INCOME> 57965
<REALIZED-GAINS-CURRENT> 52089
<APPREC-INCREASE-CURRENT> 996882
<NET-CHANGE-FROM-OPS> 1106936
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 9550
<DISTRIBUTIONS-OF-GAINS> 3176
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 14495
<NUMBER-OF-SHARES-REDEEMED> 4024
<SHARES-REINVESTED> 459
<NET-CHANGE-IN-ASSETS> 2608422
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 12235
<OVERDISTRIB-NII-PRIOR> 956
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 43
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7073
<AVERAGE-NET-ASSETS> 1765264
<PER-SHARE-NAV-BEGIN> 22.64
<PER-SHARE-NII> 0.178
<PER-SHARE-GAIN-APPREC> 3.307
<PER-SHARE-DIVIDEND> 0.13
<PER-SHARE-DISTRIBUTIONS> 0.045
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 25.95
<EXPENSE-RATIO> 0.10
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<RESTATED>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 051
<NAME> GROWTH PORTFOLIO-INVESTOR SHARES
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 3047919
<INVESTMENTS-AT-VALUE> 4192408
<RECEIVABLES> 368482
<ASSETS-OTHER> 2017
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4562907
<PAYABLE-FOR-SECURITIES> 392424
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5024
<TOTAL-LIABILITIES> 397448
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2995517
<SHARES-COMMON-STOCK> 150313
<SHARES-COMMON-PRIOR> 104984
<ACCUMULATED-NII-CURRENT> 773
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 24209
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1144960
<NET-ASSETS> 4149379
<DIVIDEND-INCOME> 17758
<INTEREST-INCOME> 876
<OTHER-INCOME> 0
<EXPENSES-NET> 3537
<NET-INVESTMENT-INCOME> 15097
<REALIZED-GAINS-CURRENT> 34464
<APPREC-INCREASE-CURRENT> 597640
<NET-CHANGE-FROM-OPS> 647201
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 13774
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 56412
<NUMBER-OF-SHARES-REDEEMED> 11552
<SHARES-REINVESTED> 469
<NET-CHANGE-IN-ASSETS> 1800126
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 521
<OVERDIST-NET-GAINS-PRIOR> 8937
<GROSS-ADVISORY-FEES> 17
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3537
<AVERAGE-NET-ASSETS> 3250073
<PER-SHARE-NAV-BEGIN> 22.53
<PER-SHARE-NII> 0.11
<PER-SHARE-GAIN-APPREC> 5.06
<PER-SHARE-DIVIDEND> 0.10
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 27.60
<EXPENSE-RATIO> 0.22
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<RESTATED>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 052
<NAME> GROWTH PORTFOLIO-INSTITUTIONAL SHARES
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> MAY-14-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 3047919
<INVESTMENTS-AT-VALUE> 4192408
<RECEIVABLES> 368482
<ASSETS-OTHER> 2017
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4562907
<PAYABLE-FOR-SECURITIES> 392424
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5024
<TOTAL-LIABILITIES> 397448
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2995517
<SHARES-COMMON-STOCK> 582
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 773
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 24209
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1144960
<NET-ASSETS> 16080
<DIVIDEND-INCOME> 17758
<INTEREST-INCOME> 876
<OTHER-INCOME> 0
<EXPENSES-NET> 3537
<NET-INVESTMENT-INCOME> 15097
<REALIZED-GAINS-CURRENT> 34464
<APPREC-INCREASE-CURRENT> 597640
<NET-CHANGE-FROM-OPS> 647201
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 29
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 581
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 1
<NET-CHANGE-IN-ASSETS> 1800126
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 521
<OVERDIST-NET-GAINS-PRIOR> 8937
<GROSS-ADVISORY-FEES> 17
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3537
<AVERAGE-NET-ASSETS> 15546
<PER-SHARE-NAV-BEGIN> 26.49
<PER-SHARE-NII> 0.03
<PER-SHARE-GAIN-APPREC> 1.14
<PER-SHARE-DIVIDEND> 0.05
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 27.61
<EXPENSE-RATIO> 0.12
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<RESTATED>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 041
<NAME> VALUE PORTFOLIO-INVESTOR SHARES
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 1702310
<INVESTMENTS-AT-VALUE> 2284861
<RECEIVABLES> 240456
<ASSETS-OTHER> 441
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2525758
<PAYABLE-FOR-SECURITIES> 225081
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 13060
<TOTAL-LIABILITIES> 238141
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1640870
<SHARES-COMMON-STOCK> 100131
<SHARES-COMMON-PRIOR> 86130
<ACCUMULATED-NII-CURRENT> 4028
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 60270
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 582449
<NET-ASSETS> 2287617
<DIVIDEND-INCOME> 19670
<INTEREST-INCOME> 252
<OTHER-INCOME> 0
<EXPENSES-NET> 2268
<NET-INVESTMENT-INCOME> 17654
<REALIZED-GAINS-CURRENT> 60389
<APPREC-INCREASE-CURRENT> 147599
<NET-CHANGE-FROM-OPS> 225642
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 13440
<DISTRIBUTIONS-OF-GAINS> 34906
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 21319
<NUMBER-OF-SHARES-REDEEMED> 9280
<SHARES-REINVESTED> 1962
<NET-CHANGE-IN-ASSETS> 492076
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 34787
<OVERDISTRIB-NII-PRIOR> 186
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 17
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2268
<AVERAGE-NET-ASSETS> 2068196
<PER-SHARE-NAV-BEGIN> 20.85
<PER-SHARE-NII> 0.18
<PER-SHARE-GAIN-APPREC> 2.34
<PER-SHARE-DIVIDEND> 0.14
<PER-SHARE-DISTRIBUTIONS> 0.38
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 22.85
<EXPENSE-RATIO> 0.22
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 061
<NAME> SMALL CAPITALIZATION STOCK PORTFOLIO-INVESTOR SHARES
<MULTIPLIER> 1000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 2724815
<INVESTMENTS-AT-VALUE> 3253248
<RECEIVABLES> 101829
<ASSETS-OTHER> 616
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 3355693
<PAYABLE-FOR-SECURITIES> 81277
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 152355
<TOTAL-LIABILITIES> 233632
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2432682
<SHARES-COMMON-STOCK> 118008
<SHARES-COMMON-PRIOR> 111668
<ACCUMULATED-NII-CURRENT> 19754
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 140925
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 528700
<NET-ASSETS> 2912880
<DIVIDEND-INCOME> 19397
<INTEREST-INCOME> 4250
<OTHER-INCOME> 0
<EXPENSES-NET> 3512
<NET-INVESTMENT-INCOME> 20135
<REALIZED-GAINS-CURRENT> 143019
<APPREC-INCREASE-CURRENT> (39136)
<NET-CHANGE-FROM-OPS> 124018
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 19379
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 18925
<NUMBER-OF-SHARES-REDEEMED> 13284
<SHARES-REINVESTED> 699
<NET-CHANGE-IN-ASSETS> 332767
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 18730
<OVERDISTRIB-NII-PRIOR> 381
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 51
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3512
<AVERAGE-NET-ASSETS> 2853820
<PER-SHARE-NAV-BEGIN> 23.75
<PER-SHARE-NII> 0.16
<PER-SHARE-GAIN-APPREC> 0.94
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0.17
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 24.68
<EXPENSE-RATIO> 0.24
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 062
<NAME> SMALL CAPITALIZATION STOCK PORTFOLIO-INSTITUTIONAL SHARES
<MULTIPLIER> 1000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 2724815
<INVESTMENTS-AT-VALUE> 3253248
<RECEIVABLES> 101829
<ASSETS-OTHER> 616
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 3355693
<PAYABLE-FOR-SECURITIES> 81277
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 152355
<TOTAL-LIABILITIES> 233632
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2432682
<SHARES-COMMON-STOCK> 8470
<SHARES-COMMON-PRIOR> 5762
<ACCUMULATED-NII-CURRENT> 19754
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 140925
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 528700
<NET-ASSETS> 209181
<DIVIDEND-INCOME> 19397
<INTEREST-INCOME> 4250
<OTHER-INCOME> 0
<EXPENSES-NET> 3512
<NET-INVESTMENT-INCOME> 20135
<REALIZED-GAINS-CURRENT> 143019
<APPREC-INCREASE-CURRENT> (39136)
<NET-CHANGE-FROM-OPS> 124018
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 1445
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2766
<NUMBER-OF-SHARES-REDEEMED> 104
<SHARES-REINVESTED> 46
<NET-CHANGE-IN-ASSETS> 332767
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 18730
<OVERDISTRIB-NII-PRIOR> 381
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 51
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3512
<AVERAGE-NET-ASSETS> 189062
<PER-SHARE-NAV-BEGIN> 23.75
<PER-SHARE-NII> 0.18
<PER-SHARE-GAIN-APPREC> 0.94
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0.17
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 24.70
<EXPENSE-RATIO> 0.12
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 071
<NAME> MID CAPITALIZATION STOCK PORTFOLIO-INVESTOR SHARES
<MULTIPLIER> 1000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> APR-20-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 120388
<INVESTMENTS-AT-VALUE> 118827
<RECEIVABLES> 2237
<ASSETS-OTHER> 21
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 121085
<PAYABLE-FOR-SECURITIES> 3513
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 393
<TOTAL-LIABILITIES> 3906
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 118314
<SHARES-COMMON-STOCK> 10855
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 198
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 228
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (1561)
<NET-ASSETS> 107318
<DIVIDEND-INCOME> 119
<INTEREST-INCOME> 106
<OTHER-INCOME> 0
<EXPENSES-NET> 27
<NET-INVESTMENT-INCOME> 198
<REALIZED-GAINS-CURRENT> 228
<APPREC-INCREASE-CURRENT> (1561)
<NET-CHANGE-FROM-OPS> (1135)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10943
<NUMBER-OF-SHARES-REDEEMED> 88
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 117179
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 27
<AVERAGE-NET-ASSETS> 56991
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> (0.13)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.89
<EXPENSE-RATIO> 0.24
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 072
<NAME> MID CAPITALIZATION STOCK PORTFOLIO-INSTITUTIONAL SHARES
<MULTIPLIER> 1000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> MAY-20-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 120388
<INVESTMENTS-AT-VALUE> 118827
<RECEIVABLES> 2237
<ASSETS-OTHER> 21
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 121085
<PAYABLE-FOR-SECURITIES> 3513
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 393
<TOTAL-LIABILITIES> 3906
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 118314
<SHARES-COMMON-STOCK> 997
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 198
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 228
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (1561)
<NET-ASSETS> 9861
<DIVIDEND-INCOME> 119
<INTEREST-INCOME> 106
<OTHER-INCOME> 0
<EXPENSES-NET> 27
<NET-INVESTMENT-INCOME> 198
<REALIZED-GAINS-CURRENT> 228
<APPREC-INCREASE-CURRENT> (1561)
<NET-CHANGE-FROM-OPS> (1135)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 997
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 117179
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 27
<AVERAGE-NET-ASSETS> 9749
<PER-SHARE-NAV-BEGIN> 10.03
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> (0.16)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.89
<EXPENSE-RATIO> 0.12
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 081
<NAME> SMALL CAPITALIZATION VALUE STOCK PORTFOLIO-INVESTOR SHARES
<MULTIPLIER> 1000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> APR-20-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 95032
<INVESTMENTS-AT-VALUE> 93473
<RECEIVABLES> 17556
<ASSETS-OTHER> 14
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 111043
<PAYABLE-FOR-SECURITIES> 18316
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 721
<TOTAL-LIABILITIES> 19037
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 93452
<SHARES-COMMON-STOCK> 9347
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 155
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (42)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (1559)
<NET-ASSETS> 92006
<DIVIDEND-INCOME> 90
<INTEREST-INCOME> 88
<OTHER-INCOME> 0
<EXPENSES-NET> 23
<NET-INVESTMENT-INCOME> 155
<REALIZED-GAINS-CURRENT> (42)
<APPREC-INCREASE-CURRENT> (1559)
<NET-CHANGE-FROM-OPS> (1446)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 9451
<NUMBER-OF-SHARES-REDEEMED> 104
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 92006
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 23
<AVERAGE-NET-ASSETS> 50720
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> (0.18)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.84
<EXPENSE-RATIO> 0.24
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 091
<NAME> SMALL CAPITALIZATION GROWTH STOCK PORTFOLIO-INVESTOR SHARES
<MULTIPLIER> 1000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> APR-20-1998
<PERIOD-END> JUN-30-1998
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 65388
<INVESTMENTS-AT-VALUE> 64695
<RECEIVABLES> 10216
<ASSETS-OTHER> 14
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 74925
<PAYABLE-FOR-SECURITIES> 10384
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 956
<TOTAL-LIABILITIES> 11340
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 65053
<SHARES-COMMON-STOCK> 6508
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 88
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (863)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (693)
<NET-ASSETS> 63585
<DIVIDEND-INCOME> 41
<INTEREST-INCOME> 64
<OTHER-INCOME> 0
<EXPENSES-NET> 17
<NET-INVESTMENT-INCOME> 88
<REALIZED-GAINS-CURRENT> (863)
<APPREC-INCREASE-CURRENT> (693)
<NET-CHANGE-FROM-OPS> (1468)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 6602
<NUMBER-OF-SHARES-REDEEMED> 94
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 63585
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 17
<AVERAGE-NET-ASSETS> 35946
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> 0.01
<PER-SHARE-GAIN-APPREC> (0.24)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.77
<EXPENSE-RATIO> 0.24
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
