<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000880195
<NAME> Fidelity Aberdeen Street Trust
<SERIES>
<NUMBER> 61
<NAME> Fidelity Freedom 2020 Fund
<MULTIPLIER> 1,000
<S>
<C>
<PERIOD-TYPE>
6-mos
<FISCAL-YEAR-END>
mar-31-2001
<PERIOD-END>
sep-30-2000
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1,562,245
<INVESTMENTS-AT-VALUE>
1,778,905
<RECEIVABLES>
9,303
<ASSETS-OTHER>
1
<OTHER-ITEMS-ASSETS>
0
<TOTAL-ASSETS>
1,788,209
<PAYABLE-FOR-SECURITIES>
6,499
<SENIOR-LONG-TERM-DEBT>
0
<OTHER-ITEMS-LIABILITIES>
2,933
<TOTAL-LIABILITIES>
9,432
<SENIOR-EQUITY>
0
<PAID-IN-CAPITAL-COMMON>
1,503,157
<SHARES-COMMON-STOCK>
109,226
<SHARES-COMMON-PRIOR>
113,689
<ACCUMULATED-NII-CURRENT>
18,440
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
40,520
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
216,660
<NET-ASSETS>
1,778,777
<DIVIDEND-INCOME>
19,446
<INTEREST-INCOME>
8
<OTHER-INCOME>
0
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585
<NET-INVESTMENT-INCOME>
18,869
<REALIZED-GAINS-CURRENT>
50,832
<APPREC-INCREASE-CURRENT>
(99,546)
<NET-CHANGE-FROM-OPS>
(29,845)
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
8,577
<DISTRIBUTIONS-OF-GAINS>
79,613
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
44,358
<NUMBER-OF-SHARES-REDEEMED>
54,411
<SHARES-REINVESTED>
5,590
<NET-CHANGE-IN-ASSETS>
(185,401)
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8,148
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69,301
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0
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0
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930
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0
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933
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1,858,543
<PER-SHARE-NAV-BEGIN>
17.280
<PER-SHARE-NII>
.160
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(.430)
<PER-SHARE-DIVIDEND>
.070
<PER-SHARE-DISTRIBUTIONS>
.650
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
16.290
<EXPENSE-RATIO>
8
</TABLE>
