<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000038188
<NAME> FORT DEARBORN INCOME SECURITIES, INC.
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> SEP-30-2000
<INVESTMENTS-AT-COST> 131,890,021
<INVESTMENTS-AT-VALUE> 129,793,996
<RECEIVABLES> 2,515,129
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 132,309,125
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 220,499
<TOTAL-LIABILITIES> 220,499
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 135,120,133
<SHARES-COMMON-STOCK> 8,775,665
<SHARES-COMMON-PRIOR> 8,788,865
<ACCUMULATED-NII-CURRENT> 278,670
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (1,214,152)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (2,541,164)
<NET-ASSETS> 132,088,626
<DIVIDEND-INCOME> 136,200
<INTEREST-INCOME> 10,026,741
<OTHER-INCOME> 0
<EXPENSES-NET> (973,526)
<NET-INVESTMENT-INCOME> 9,189,415
<REALIZED-GAINS-CURRENT> (1,247,286)
<APPREC-INCREASE-CURRENT> 696,261
<NET-CHANGE-FROM-OPS> 8,638,390
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (9,130,884)
<DISTRIBUTIONS-OF-GAINS> (57,118)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> (13,200)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> (719,417)
<ACCUMULATED-NII-PRIOR> 224,250
<ACCUMULATED-GAINS-PRIOR> 86,141
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 660,368
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 973,526
<AVERAGE-NET-ASSETS> 131,079,564
<PER-SHARE-NAV-BEGIN> 15.11
<PER-SHARE-NII> 1.05
<PER-SHARE-GAIN-APPREC> (0.06)
<PER-SHARE-DIVIDEND> (1.04)
<PER-SHARE-DISTRIBUTIONS> (0.01)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 15.05
<EXPENSE-RATIO> 0.74
</TABLE>