[ARTICLE] 6
[CIK] 0000809991
[NAME] PAINEWEBBER MUNICIPAL SERIES
[SERIES]
[NUMBER] 1
[NAME] MUNICIPAL HIGH INCOME CLASS C
[MULTIPLIER] 1000
<TABLE>
<S> <C>
[PERIOD-TYPE] 6-MOS
[FISCAL-YEAR-END] FEB-28-2001
[PERIOD-START] MAR-01-2000
[PERIOD-END] AUG-31-2000
[INVESTMENTS-AT-COST] 17856
[INVESTMENTS-AT-VALUE] 17058
[RECEIVABLES] 340
[ASSETS-OTHER] 19
[OTHER-ITEMS-ASSETS] 11
[TOTAL-ASSETS] 17428
[PAYABLE-FOR-SECURITIES] 0
[SENIOR-LONG-TERM-DEBT] 0
[OTHER-ITEMS-LIABILITIES] 48
[TOTAL-LIABILITIES] 48
[SENIOR-EQUITY] 0
[PAID-IN-CAPITAL-COMMON] 18327
[SHARES-COMMON-STOCK] 1754
[SHARES-COMMON-PRIOR] 2011
[ACCUMULATED-NII-CURRENT] 0
[OVERDISTRIBUTION-NII] 0
[ACCUMULATED-NET-GAINS] (149)
[OVERDISTRIBUTION-GAINS] 0
[ACCUM-APPREC-OR-DEPREC] (798)
[NET-ASSETS] 17380
[DIVIDEND-INCOME] 0
[INTEREST-INCOME] 610
[OTHER-INCOME] 0
[EXPENSES-NET] (150)
[NET-INVESTMENT-INCOME] 460
[REALIZED-GAINS-CURRENT] (2)
[APPREC-INCREASE-CURRENT] 92
[NET-CHANGE-FROM-OPS] 550
[EQUALIZATION] 0
[DISTRIBUTIONS-OF-INCOME] (460)
[DISTRIBUTIONS-OF-GAINS] 0
[DISTRIBUTIONS-OTHER] 0
[NUMBER-OF-SHARES-SOLD] 41
[NUMBER-OF-SHARES-REDEEMED] (330)
[SHARES-REINVESTED] 31
[NET-CHANGE-IN-ASSETS] (2424)
[ACCUMULATED-NII-PRIOR] 0
[ACCUMULATED-GAINS-PRIOR] (159)
[OVERDISTRIB-NII-PRIOR] 0
[OVERDIST-NET-GAINS-PRIOR] 0
[GROSS-ADVISORY-FEES] 55
[INTEREST-EXPENSE] 0
[GROSS-EXPENSE] 150
[AVERAGE-NET-ASSETS] 18223
[PER-SHARE-NAV-BEGIN] 9.85
[PER-SHARE-NII] 0.25
[PER-SHARE-GAIN-APPREC] 0.06
[PER-SHARE-DIVIDEND] (0.25)
[PER-SHARE-DISTRIBUTIONS] 0
[RETURNS-OF-CAPITAL] 0
[PER-SHARE-NAV-END] 9.91
[EXPENSE-RATIO] 1.63
</TABLE>
