<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000201670
<NAME> DELAWARE GROUP STATE TAX FREE INCOME TRUST
<SERIES>
<NUMBER> 012
<NAME> DELAWARE TAX FREE PENNSYLVANIA FUND B CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-29-2000
<PERIOD-END> AUG-31-2000
<INVESTMENTS-AT-COST> 725,888,538
<INVESTMENTS-AT-VALUE> 742,219,783
<RECEIVABLES> 12,143,121
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 754,362,904
<PAYABLE-FOR-SECURITIES> 1,316,663
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,745,696
<TOTAL-LIABILITIES> 3,062,359
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 766,050,293
<SHARES-COMMON-STOCK> 4,813,075
<SHARES-COMMON-PRIOR> 5,394,958
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (171,876)
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (30,909,117)
<ACCUM-APPREC-OR-DEPREC> 16,331,245
<NET-ASSETS> 37,179,825
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 23,517,193
<OTHER-INCOME> 0
<EXPENSES-NET> 3,612,545
<NET-INVESTMENT-INCOME> 19,904,648
<REALIZED-GAINS-CURRENT> (3,223,990)
<APPREC-INCREASE-CURRENT> 29,691,965
<NET-CHANGE-FROM-OPS> 46,372,623
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 844,310
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,387,085
<NUMBER-OF-SHARES-REDEEMED> 3,363,197
<SHARES-REINVESTED> 467,422
<NET-CHANGE-IN-ASSETS> 0
<ACCUMULATED-NII-PRIOR> (15,276)
<ACCUMULATED-GAINS-PRIOR> (7,360,843)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,005,849
<INTEREST-EXPENSE> 0
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<AVERAGE-NET-ASSETS> 37,180,000
<PER-SHARE-NAV-BEGIN> 7.460
<PER-SHARE-NII> 0.174
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<PER-SHARE-DIVIDEND> 0.174
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 7.720
<EXPENSE-RATIO> 1.720
</TABLE>
