<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000787980
<NAME> STATE STREET RESEARCH INCOME TRUST
<SERIES>
<NUMBER> 035
<NAME> STATE STREET RESEARCH STRATEGIC GROWTH & INCOME FUND CL. B1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> MAR-31-2000
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 739,594,866
<INVESTMENTS-AT-VALUE> 811,623,889
<RECEIVABLES> 12,675,143
<ASSETS-OTHER> 63,584
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 824,362,616
<PAYABLE-FOR-SECURITIES> 46,535,033
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 58,136,025
<TOTAL-LIABILITIES> 104,671,058
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 574,378,290
<SHARES-COMMON-STOCK> 3,098,246
<SHARES-COMMON-PRIOR> 993,052
<ACCUMULATED-NII-CURRENT> 1,781,742
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 71,246,432
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 72,285,094
<NET-ASSETS> 719,691,558
<DIVIDEND-INCOME> 4,024,808
<INTEREST-INCOME> 21,014,852
<OTHER-INCOME> 0
<EXPENSES-NET> 12,041,822
<NET-INVESTMENT-INCOME> 12,997,838
<REALIZED-GAINS-CURRENT> 82,760,639
<APPREC-INCREASE-CURRENT> 12,249,100
<NET-CHANGE-FROM-OPS> 108,007,577
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (346,435)
<DISTRIBUTIONS-OF-GAINS> (501,338)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,460,931
<NUMBER-OF-SHARES-REDEEMED> (431,736)
<SHARES-REINVESTED> 75,999
<NET-CHANGE-IN-ASSETS> 464,153
<ACCUMULATED-NII-PRIOR> 1,544,151
<ACCUMULATED-GAINS-PRIOR> 144,809
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5,213,801
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 12,096,110
<AVERAGE-NET-ASSETS> 708,844,210
<PER-SHARE-NAV-BEGIN> 10.36
<PER-SHARE-NII> 0.17
<PER-SHARE-GAIN-APPREC> 1.45
<PER-SHARE-DIVIDEND> (0.14)
<PER-SHARE-DISTRIBUTIONS> (0.21)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.63
<EXPENSE-RATIO> 2.05
</TABLE>
