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

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000764624
<NAME> SMITH BARNEY INCOME FUNDS
<SERIES>
   <NUMBER> 4
   <NAME> SMITH BARNEY MUNICIPAL HIGH INCOME FUND. CLASS B

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JUL-31-1999
<PERIOD-END>                               JUL-31-1999
<INVESTMENTS-AT-COST>                      630,396,427
<INVESTMENTS-AT-VALUE>                     645,529,194
<RECEIVABLES>                                8,972,009
<ASSETS-OTHER>                                  31,236
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             654,532,439
<PAYABLE-FOR-SECURITIES>                     6,467,086
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    2,319,363
<TOTAL-LIABILITIES>                          8,786,449
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   630,309,242
<SHARES-COMMON-STOCK>                       20,805,671
<SHARES-COMMON-PRIOR>                       26,211,866
<ACCUMULATED-NII-CURRENT>                  (1,245,038)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      1,549,019
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    15,132,767
<NET-ASSETS>                               645,745,990
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                           42,740,100
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               7,925,161
<NET-INVESTMENT-INCOME>                     34,814,939
<REALIZED-GAINS-CURRENT>                     4,718,930
<APPREC-INCREASE-CURRENT>                 (26,281,421)
<NET-CHANGE-FROM-OPS>                       13,252,448
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                   19,777,584
<DISTRIBUTIONS-OF-GAINS>                    10,654,662
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      1,121,035
<NUMBER-OF-SHARES-REDEEMED>                  7,522,522
<SHARES-REINVESTED>                            995,292
<NET-CHANGE-IN-ASSETS>                    (95,488,797)
<ACCUMULATED-NII-PRIOR>                    (1,292,859)
<ACCUMULATED-GAINS-PRIOR>                   14,306,148
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        4,248,102
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              7,925,161
<AVERAGE-NET-ASSETS>                       421,667,814
<PER-SHARE-NAV-BEGIN>                            17.98
<PER-SHARE-NII>                                  00.83
<PER-SHARE-GAIN-APPREC>                         (0.56)
<PER-SHARE-DIVIDEND>                             00.83
<PER-SHARE-DISTRIBUTIONS>                        00.43
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              16.99
<EXPENSE-RATIO>                                  01.31


</TABLE>