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

 

<ARTICLE> 6
<LEGEND>
Morgan Stanley Dean Witter Municipal Income Trust (IQI)


                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          OCT-31-2000
<PERIOD-END>                               OCT-31-2000
<INVESTMENTS-AT-COST>                      644,844,269
<INVESTMENTS-AT-VALUE>                     675,833,908
<RECEIVABLES>                               11,545,221
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<OTHER-ITEMS-ASSETS>                        10,475,104
<TOTAL-ASSETS>                             698,180,654
<PAYABLE-FOR-SECURITIES>                  (21,405,133)
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    (900,852)
<TOTAL-LIABILITIES>                       (22,305,985)
<SENIOR-EQUITY>                            208,000,000
<PAID-IN-CAPITAL-COMMON>                   430,512,889
<SHARES-COMMON-STOCK>                       30,738,920
<SHARES-COMMON-PRIOR>                       32,730,413
<ACCUMULATED-NII-CURRENT>                    2,529,092
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      3,843,049
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    30,989,639
<NET-ASSETS>                               675,874,669
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                           40,488,840
<OTHER-INCOME>                                       0
<EXPENSES-NET>                             (3,503,995)
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<REALIZED-GAINS-CURRENT>                     4,965,229
<APPREC-INCREASE-CURRENT>                    2,723,226
<NET-CHANGE-FROM-OPS>                       44,673,300
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                 (37,387,606)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                (1,991,493)
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                    (19,304,423)
<ACCUMULATED-NII-PRIOR>                      2,931,853
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<OVERDISTRIB-NII-PRIOR>                              0
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<EXPENSE-RATIO>                                   0.75