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<PAID-IN-CAPITAL-COMMON> 1750639
<SHARES-COMMON-STOCK> 88349
<SHARES-COMMON-PRIOR> 80119
<ACCUMULATED-NII-CURRENT> 14412
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 65070
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 717545
<NET-ASSETS> 2547666
<DIVIDEND-INCOME> 14289
<INTEREST-INCOME> 3304
<OTHER-INCOME> 0
<EXPENSES-NET> 2603
<NET-INVESTMENT-INCOME> 14990
<REALIZED-GAINS-CURRENT> 65831
<APPREC-INCREASE-CURRENT> 182136
<NET-CHANGE-FROM-OPS> 262957
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 841
<DISTRIBUTIONS-OF-GAINS> 31006
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 13699
<NUMBER-OF-SHARES-REDEEMED> 6623
<SHARES-REINVESTED> 1154
<NET-CHANGE-IN-ASSETS> 448828
<ACCUMULATED-NII-PRIOR> 263
<ACCUMULATED-GAINS-PRIOR> 30245
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 29
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2603
<AVERAGE-NET-ASSETS> 2250222
<PER-SHARE-NAV-BEGIN> 26.20
<PER-SHARE-NII> 0.17
<PER-SHARE-GAIN-APPREC> 2.85
<PER-SHARE-DIVIDEND> 0.01
<PER-SHARE-DISTRIBUTIONS> 0.37
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 28.84
<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> 03
<NAME> TOTAL STOCK MARKET PORTFOLIO
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> JUN-30-1997
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 3522911
<INVESTMENTS-AT-VALUE> 4876092
<RECEIVABLES> 104637
<ASSETS-OTHER> 962
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4981691
<PAYABLE-FOR-SECURITIES> 27121
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 91596
<TOTAL-LIABILITIES> 118717
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 3466348
<SHARES-COMMON-STOCK> 234688
<SHARES-COMMON-PRIOR> 198663
<ACCUMULATED-NII-CURRENT> 8049
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 30689
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1357888
<NET-ASSETS> 4862974
<DIVIDEND-INCOME> 32930
<INTEREST-INCOME> 5977
<OTHER-INCOME> 0
<EXPENSES-NET> 4119
<NET-INVESTMENT-INCOME> 34788
<REALIZED-GAINS-CURRENT> 30515
<APPREC-INCREASE-CURRENT> 612779
<NET-CHANGE-FROM-OPS> 678082
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 26831
<DISTRIBUTIONS-OF-GAINS> 8575
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 46618
<NUMBER-OF-SHARES-REDEEMED> 12283
<SHARES-REINVESTED> 1690
<NET-CHANGE-IN-ASSETS> 1332118
<ACCUMULATED-NII-PRIOR> 92
<ACCUMULATED-GAINS-PRIOR> 8749
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 29
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4119
<AVERAGE-NET-ASSETS> 4095511
<PER-SHARE-NAV-BEGIN> 17.77
<PER-SHARE-NII> 0.15
<PER-SHARE-GAIN-APPREC> 2.96
<PER-SHARE-DIVIDEND> 0.12
<PER-SHARE-DISTRIBUTIONS> 0.04
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 20.72
<EXPENSE-RATIO> 0.20
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 05
<NAME> GROWTH PORTFOLIO
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> JUN-30-1997
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 1319717
<INVESTMENTS-AT-VALUE> 1694238
<RECEIVABLES> 196067
<ASSETS-OTHER> 130
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1890435
<PAYABLE-FOR-SECURITIES> 190401
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 6942
<TOTAL-LIABILITIES> 197343
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1295482
<SHARES-COMMON-STOCK> 80897
<SHARES-COMMON-PRIOR> 46552
<ACCUMULATED-NII-CURRENT> 55
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 22970
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 374585
<NET-ASSETS> 1693092
<DIVIDEND-INCOME> 7909
<INTEREST-INCOME> 325
<OTHER-INCOME> 0
<EXPENSES-NET> 1170
<NET-INVESTMENT-INCOME> 7064
<REALIZED-GAINS-CURRENT> 25022
<APPREC-INCREASE-CURRENT> 230646
<NET-CHANGE-FROM-OPS> 262732
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 7057
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 40935
<NUMBER-OF-SHARES-REDEEMED> 6917
<SHARES-REINVESTED> 327
<NET-CHANGE-IN-ASSETS> 906188
<ACCUMULATED-NII-PRIOR> 48
<ACCUMULATED-GAINS-PRIOR> (2052)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 12
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1170
<AVERAGE-NET-ASSETS> 1188874
<PER-SHARE-NAV-BEGIN> 16.90
<PER-SHARE-NII> 0.10
<PER-SHARE-GAIN-APPREC> 4.03
<PER-SHARE-DIVIDEND> 0.10
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 20.93
<EXPENSE-RATIO> 0.20
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 04
<NAME> VALUE PORTFOLIO
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> JUN-30-1997
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 1101253
<INVESTMENTS-AT-VALUE> 1422410
<RECEIVABLES> 171598
<ASSETS-OTHER> 103
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1594111
<PAYABLE-FOR-SECURITIES> 166398
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 11265
<TOTAL-LIABILITIES> 177663
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1063571
<SHARES-COMMON-STOCK> 73365
<SHARES-COMMON-PRIOR> 59666
<ACCUMULATED-NII-CURRENT> 3259
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 28435
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 321183
<NET-ASSETS> 1416448
<DIVIDEND-INCOME> 14541
<INTEREST-INCOME> 222
<OTHER-INCOME> 0
<EXPENSES-NET> 1200
<NET-INVESTMENT-INCOME> 13563
<REALIZED-GAINS-CURRENT> 28263
<APPREC-INCREASE-CURRENT> 145174
<NET-CHANGE-FROM-OPS> 187000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 9773
<DISTRIBUTIONS-OF-GAINS> 21325
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 19501
<NUMBER-OF-SHARES-REDEEMED> 7408
<SHARES-REINVESTED> 1606
<NET-CHANGE-IN-ASSETS> 400721
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 21497
<OVERDISTRIB-NII-PRIOR> 531
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 11
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1200
<AVERAGE-NET-ASSETS> 1208120
<PER-SHARE-NAV-BEGIN> 17.02
<PER-SHARE-NII> 0.19
<PER-SHARE-GAIN-APPREC> 2.56
<PER-SHARE-DIVIDEND> 0.14
<PER-SHARE-DISTRIBUTIONS> 0.32
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 19.31
<EXPENSE-RATIO> 0.20
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
<NUMBER> 06
<NAME> SMALL CAPITALIZATION STOCK PORTFOLIO
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> JUN-30-1997
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 1723323
<INVESTMENTS-AT-VALUE> 2157092
<RECEIVABLES> 176912
<ASSETS-OTHER> 153
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2334157
<PAYABLE-FOR-SECURITIES> 65472
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 117971
<TOTAL-LIABILITIES> 183443
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1671049
<SHARES-COMMON-STOCK> 95685
<SHARES-COMMON-PRIOR> 84695
<ACCUMULATED-NII-CURRENT> 12057
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 32792
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 434816
<NET-ASSETS> 2150714
<DIVIDEND-INCOME> 12661
<INTEREST-INCOME> 2014
<OTHER-INCOME> 0
<EXPENSES-NET> 2124
<NET-INVESTMENT-INCOME> 12551
<REALIZED-GAINS-CURRENT> 32613
<APPREC-INCREASE-CURRENT> 167768
<NET-CHANGE-FROM-OPS> 212932
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 5787
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 20977
<NUMBER-OF-SHARES-REDEEMED> 10267
<SHARES-REINVESTED> 280
<NET-CHANGE-IN-ASSETS> 437360
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 5966
<OVERDISTRIB-NII-PRIOR> 494
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 35
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2124
<AVERAGE-NET-ASSETS> 1844998
<PER-SHARE-NAV-BEGIN> 20.23
<PER-SHARE-NII> 0.140
<PER-SHARE-GAIN-APPREC> 2.175
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0.065
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 22.48
<EXPENSE-RATIO> 0.23
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
