[ARTICLE] 6
[CIK] 799102
[NAME] Oppenheimer Intermediate Municipal Fund- B
[SERIES]
[NUMBER] 1
[NAME] Oppenheimer Municipal Fund
<TABLE>
<S> <C>
[PERIOD-TYPE] 6-MOS
[FISCAL-YEAR-END] SEP-30-2000
[PERIOD-START] OCT-01-1999
[PERIOD-END] Mar-31-2000
[INVESTMENTS-AT-COST] 144,649,624
[INVESTMENTS-AT-VALUE] 143,114,694
[RECEIVABLES] 2,645,812
[ASSETS-OTHER] 22,954
[OTHER-ITEMS-ASSETS] 351,501
[TOTAL-ASSETS] 146,134,961
[PAYABLE-FOR-SECURITIES] 1,020,707
[SENIOR-LONG-TERM-DEBT] 0
[OTHER-ITEMS-LIABILITIES] 932,050
[TOTAL-LIABILITIES] 1,952,757
[SENIOR-EQUITY] 0
[PAID-IN-CAPITAL-COMMON] 150,258,902
[SHARES-COMMON-STOCK] 1,311,666
[SHARES-COMMON-PRIOR] 1,277,746
[ACCUMULATED-NII-CURRENT] 0
[OVERDISTRIBUTION-NII] 22,449
[ACCUMULATED-NET-GAINS] (4,276,757)
[OVERDISTRIBUTION-GAINS] 0
[ACCUM-APPREC-OR-DEPREC] (1,777,492)
[NET-ASSETS] 18,723,659
[DIVIDEND-INCOME] 0
[INTEREST-INCOME] 4,600,850
[OTHER-INCOME] 0
[EXPENSES-NET] 851,230
[NET-INVESTMENT-INCOME] 3,749,620
[REALIZED-GAINS-CURRENT] (4,279,688)
[APPREC-INCREASE-CURRENT] (77,225)
[NET-CHANGE-FROM-OPS] (607,293)
[EQUALIZATION] 0
[DISTRIBUTIONS-OF-INCOME] 407,076
[DISTRIBUTIONS-OF-GAINS] 124,867
[DISTRIBUTIONS-OTHER] 0
[NUMBER-OF-SHARES-SOLD] 224,467
[NUMBER-OF-SHARES-REDEEMED] 215,369
[SHARES-REINVESTED] 24,822
[NET-CHANGE-IN-ASSETS] (20,822,975)
[ACCUMULATED-NII-PRIOR] 0
[ACCUMULATED-GAINS-PRIOR] 1,035,795
[OVERDISTRIB-NII-PRIOR] 2,818
[OVERDIST-NET-GAINS-PRIOR] 0
[GROSS-ADVISORY-FEES] 370,624
[INTEREST-EXPENSE] 0
[GROSS-EXPENSE] 856,923
[AVERAGE-NET-ASSETS] 18,773,000
[PER-SHARE-NAV-BEGIN] 14.76
[PER-SHARE-NII] 0.30
[PER-SHARE-GAIN-APPREC] (0.39)
[PER-SHARE-DIVIDEND] 0.31
[PER-SHARE-DISTRIBUTIONS] 0.09
[RETURNS-OF-CAPITAL] 0.00
[PER-SHARE-NAV-END] 14.27
[EXPENSE-RATIO] 1.69
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0.00
</TABLE>
