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SIGNATURE THOMAS G. ROSE
TITLE TREASURER
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<ARTICLE> 6
<SERIES>
<NUMBER>001
<NAME> SELIGMAN NEW JERSEY MUNICIPAL FUND CL A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-1997
<PERIOD-END> MAR-31-1997
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<INVESTMENTS-AT-VALUE> 65009
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<ASSETS-OTHER> 214
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<SHARES-COMMON-STOCK> 8530<F1>
<SHARES-COMMON-PRIOR> 8720<F1>
<ACCUMULATED-NII-CURRENT> 0
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<DISTRIBUTIONS-OF-GAINS> (2166)<F1>
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<NUMBER-OF-SHARES-REDEEMED> (999)<F1>
<SHARES-REINVESTED> 341<F1>
<NET-CHANGE-IN-ASSETS> (4477)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 2188
<OVERDISTRIB-NII-PRIOR> 0
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<FN>
<F1>Class A only. All other data are fund level.
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER>004
<NAME> SELIGMAN NEW JERSEY MUNICIPAL FUND CL D
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<S> <C>
<PERIOD-TYPE> 6-MOS
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<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 2188
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</TABLE>
