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SIGNATURE JOHN H. COSTELLO
TITLE ASSISTANT TREASURER
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8,452,865
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0
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0
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(2,741)
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0
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0
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9,299,646
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0
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493,610
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0
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39,882
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453,728
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90
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0
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453,818
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0
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453,728
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0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
13,164,275
<NUMBER-OF-SHARES-REDEEMED>
12,757,142
<SHARES-REINVESTED>
441,878
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849,101
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(2,831)
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0
<OVERDIST-NET-GAINS-PRIOR>
0
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40,096
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0
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40,128
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8,917,285
<PER-SHARE-NAV-BEGIN>
1.000
<PER-SHARE-NII>
.051
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
.051
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0
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0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
45
<AVG-DEBT-OUTSTANDING>
0
<AVG-DEBT-PER-SHARE>
0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000917286
<NAME> Fidelity Hereford Street Trust
<SERIES>
<NUMBER> 21
<NAME> Spartan U.S. Government Money Market Fund
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<S>
<C>
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year
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apr-30-1997
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824,070
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3,734
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0
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0
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2,338
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12,053
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0
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815,913
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815,913
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761,647
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0
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0
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0
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0
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815,751
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0
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0
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3,754
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42,050
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9
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0
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42,059
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0
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0
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0
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981,571
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40,494
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54,276
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0
<ACCUMULATED-GAINS-PRIOR>
(171)
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0
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0
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0
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</TABLE>
