<TABLE> <S> <C>
<ARTICLE> 6
<RESTATED>
<CIK> 0000106444
<NAME> VANGUARD FIXED INCOME SECURITIES FUNDS
<SERIES>
<NUMBER> 07
<NAME> VANGUARD SHORT-TERM TREASURY FUND
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JAN-31-2001
<PERIOD-START> FEB-01-2000
<PERIOD-END> JUL-31-2000
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<OTHER-ITEMS-LIABILITIES> 84963
<TOTAL-LIABILITIES> 92944
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<SHARES-COMMON-STOCK> 115756
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<REALIZED-GAINS-CURRENT> (5223)
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<NET-CHANGE-FROM-OPS> 43284
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<NUMBER-OF-SHARES-REDEEMED> 23768
<SHARES-REINVESTED> 2994
<NET-CHANGE-IN-ASSETS> (16183)
<ACCUMULATED-NII-PRIOR> 0
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<PER-SHARE-NAV-END> 10.03
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</TABLE>