<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0001058234
<NAME> MUNIHOLDINGS INSURED FUND, INC.
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> APR-30-2000
<PERIOD-START> MAY-01-1999
<PERIOD-END> APR-30-2000
<INVESTMENTS-AT-COST> 293279982
<INVESTMENTS-AT-VALUE> 290830964
<RECEIVABLES> 5899490
<ASSETS-OTHER> 4981
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 296735435
<PAYABLE-FOR-SECURITIES> 4266504
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 374623
<TOTAL-LIABILITIES> 4641127
<SENIOR-EQUITY> 134000000
<PAID-IN-CAPITAL-COMMON> 191485142
<SHARES-COMMON-STOCK> 12867541
<SHARES-COMMON-PRIOR> 12832937
<ACCUMULATED-NII-CURRENT> 976307
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (30418946)
<OVERDISTRIBUTION-GAINS> (1499177)
<ACCUM-APPREC-OR-DEPREC> (2449018)
<NET-ASSETS> 292094308
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 16961724
<OTHER-INCOME> 0
<EXPENSES-NET> (2144587)
<NET-INVESTMENT-INCOME> 14817137
<REALIZED-GAINS-CURRENT> (31712691)
<APPREC-INCREASE-CURRENT> (4443093)
<NET-CHANGE-FROM-OPS> (21338647)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (10599091)
<DISTRIBUTIONS-OF-GAINS> (1141477)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 34604
<NET-CHANGE-IN-ASSETS> (37607417)
<ACCUMULATED-NII-PRIOR> 1326443
<ACCUMULATED-GAINS-PRIOR> 1293718
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1653599
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2324647
<AVERAGE-NET-ASSETS> 301480423
<PER-SHARE-NAV-BEGIN> 15.25
<PER-SHARE-NII> 1.17
<PER-SHARE-GAIN-APPREC> (2.82)
<PER-SHARE-DIVIDEND> (0.83)
<PER-SHARE-DISTRIBUTIONS> (0.09)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.29
<EXPENSE-RATIO> 1.39
</TABLE>