[ARTICLE] 6
[CIK] 0000775370
[NAME] SMITH BARNEY MUNI FUNDS
[SERIES]
   [NUMBER] 13
   [NAME] PENNSYLVANIA PORTFOLIO, CLASS B
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   6-MOS
[FISCAL-YEAR-END]                          MAR-31-1999
[PERIOD-END]                               SEP-30-1998
[INVESTMENTS-AT-COST]                       47,567,717
[INVESTMENTS-AT-VALUE]                      51,087,788
[RECEIVABLES]                                  987,637
[ASSETS-OTHER]                                       0
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                              52,075,425
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      453,360
[TOTAL-LIABILITIES]                            453,360
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                    47,416,064
[SHARES-COMMON-STOCK]                        1,596,147
[SHARES-COMMON-PRIOR]                        1,425,174
[ACCUMULATED-NII-CURRENT]                      111,832
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                        574,098
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                     3,520,071
[NET-ASSETS]                                51,622,065
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                            1,307,446
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                 165,076
[NET-INVESTMENT-INCOME]                      1,142,370
[REALIZED-GAINS-CURRENT]                        80,549
[APPREC-INCREASE-CURRENT]                      994,064
[NET-CHANGE-FROM-OPS]                        2,216,983
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                      469,932
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                        237,173
[NUMBER-OF-SHARES-REDEEMED]                     85,996
[SHARES-REINVESTED]                             19,796
[NET-CHANGE-IN-ASSETS]                       2,216,983
[ACCUMULATED-NII-PRIOR]                         96,710
[ACCUMULATED-GAINS-PRIOR]                      493,549
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                          106,260
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                244,805
[AVERAGE-NET-ASSETS]                        20,578,998
[PER-SHARE-NAV-BEGIN]                            13.52
[PER-SHARE-NII]                                  00.31
[PER-SHARE-GAIN-APPREC]                          00.30
[PER-SHARE-DIVIDEND]                             00.31
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              13.82
[EXPENSE-RATIO]                                  00.89
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>