<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000788606
<NAME> VANGUARD PENNSYLVANIA TAX FREE FUNDS
<SERIES>
<NUMBER> 02
<NAME> VANGUARD PENNSYLVANIA TAX-EXEMPT MONEY MARKET FUND
<MULTIPLIER> 1000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> NOV-30-2000
<PERIOD-START> DEC-01-1999
<PERIOD-END> MAY-31-2000
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 1971977
<INVESTMENTS-AT-VALUE> 1971977
<RECEIVABLES> 28488
<ASSETS-OTHER> 461
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2000926
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 7638
<TOTAL-LIABILITIES> 7638
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1993328
<SHARES-COMMON-STOCK> 1993329
<SHARES-COMMON-PRIOR> 1963492
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (40)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 1993288
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 38338
<OTHER-INCOME> 0
<EXPENSES-NET> 1768
<NET-INVESTMENT-INCOME> 36570
<REALIZED-GAINS-CURRENT> (1)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 36569
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 36570
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1270761
<NUMBER-OF-SHARES-REDEEMED> 1274851
<SHARES-REINVESTED> 33927
<NET-CHANGE-IN-ASSETS> 29836
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (39)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 117
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1779
<AVERAGE-NET-ASSETS> 1997295
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.018
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0.018
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.18
</TABLE>