WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000775370
<NAME> SMITH BARNEY MUNI FUNDS
<SERIES>
   <NUMBER> 13
   <NAME> PENNSYLVANIA PORTFOLIO. CLASS B

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          MAR-31-1999
<PERIOD-END>                               MAR-31-1999
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<INVESTMENTS-AT-VALUE>                      65,987,331
<RECEIVABLES>                                2,567,904
<ASSETS-OTHER>                                  56,004
<OTHER-ITEMS-ASSETS>                                 0
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<PAYABLE-FOR-SECURITIES>                     1,000,000
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      168,706
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<SENIOR-EQUITY>                                      0
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<SHARES-COMMON-PRIOR>                        1,425,174
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<OVERDISTRIBUTION-NII>                               0
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<OVERDISTRIBUTION-GAINS>                             0
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<DIVIDEND-INCOME>                                    0
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<APPREC-INCREASE-CURRENT>                     (40,052)
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<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    1,018,541
<DISTRIBUTIONS-OF-GAINS>                       260,275
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        619,028
<NUMBER-OF-SHARES-REDEEMED>                    219,380
<SHARES-REINVESTED>                             55,942
<NET-CHANGE-IN-ASSETS>                      24,490,219
<ACCUMULATED-NII-PRIOR>                         96,710
<ACCUMULATED-GAINS-PRIOR>                      493,549
<OVERDISTRIB-NII-PRIOR>                              0
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<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                558,320
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<PER-SHARE-NAV-BEGIN>                            13.52
<PER-SHARE-NII>                                  00.60
<PER-SHARE-GAIN-APPREC>                          00.07
<PER-SHARE-DIVIDEND>                             00.62
<PER-SHARE-DISTRIBUTIONS>                        00.15
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.42
<EXPENSE-RATIO>                                  01.01
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>