<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000728352
<NAME> DELAWARE GROUP TAX-FREE FUND
<SERIES>
<NUMBER> 023
<NAME> DELAWARE TAX-FREE INSURED FUND C CLASS
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> AUG-31-2000
<PERIOD-END> AUG-31-2000
<INVESTMENTS-AT-COST> 63,251,181
<INVESTMENTS-AT-VALUE> 66,262,799
<RECEIVABLES> 1,141,326
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 319,288
<TOTAL-ASSETS> 67,723,413
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 198,327
<TOTAL-LIABILITIES> 198,327
<SENIOR-EQUITY> 68,066,576
<PAID-IN-CAPITAL-COMMON> 0
<SHARES-COMMON-STOCK> 78,218
<SHARES-COMMON-PRIOR> 144,960
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3,553,108)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3,011,618
<NET-ASSETS> 812,989
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 4,187,366
<OTHER-INCOME> 0
<EXPENSES-NET> 706,553
<NET-INVESTMENT-INCOME> 3,480,813
<REALIZED-GAINS-CURRENT> (824,214)
<APPREC-INCREASE-CURRENT> 826,088
<NET-CHANGE-FROM-OPS> 3,482,687
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 48,215
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 31,861
<NUMBER-OF-SHARES-REDEEMED> 102,784
<SHARES-REINVESTED> 4,181
<NET-CHANGE-IN-ASSETS> (7,420,782)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (2,728,894)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 347,340
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 706,553
<AVERAGE-NET-ASSETS> 1,117,362
<PER-SHARE-NAV-BEGIN> 10.360
<PER-SHARE-NII> 0.432
<PER-SHARE-GAIN-APPREC> 0.030
<PER-SHARE-DIVIDEND> 0.432
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 10.390
<EXPENSE-RATIO> 1.750
</TABLE>
