<TABLE> <S> <C>
<ARTICLE> 9
<LEGEND>
THE FINANCIAL DATA SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
FROM INTERNATIONAL BANCSHARES CORPORATION FORM 10-Q FOR THE QUARTER ENDED
SEPTEMBER 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> SEP-30-2000
<CASH> 101,980
<INT-BEARING-DEPOSITS> 2,372
<FED-FUNDS-SOLD> 23,500
<TRADING-ASSETS> 0
<INVESTMENTS-HELD-FOR-SALE> 3,098,837
<INVESTMENTS-CARRYING> 2,170
<INVESTMENTS-MARKET> 2,170
<LOANS> 2,222,210
<ALLOWANCE> 30,354
<TOTAL-ASSETS> 5,844,963
<DEPOSITS> 3,706,056
<SHORT-TERM> 1,609,000
<LIABILITIES-OTHER> 50,153
<LONG-TERM> 0
0
0
<COMMON> 26,458
<OTHER-SE> 328,915
<TOTAL-LIABILITIES-AND-EQUITY> 5,844,963
<INTEREST-LOAN> 156,255
<INTEREST-INVEST> 153,958
<INTEREST-OTHER> 247
<INTEREST-TOTAL> 310,460
<INTEREST-DEPOSIT> 108,859
<INTEREST-EXPENSE> 182,648
<INTEREST-INCOME-NET> 127,812
<LOAN-LOSSES> 5,090
<SECURITIES-GAINS> (884)
<EXPENSE-OTHER> 80,502
<INCOME-PRETAX> 85,961
<INCOME-PRE-EXTRAORDINARY> 85,961
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 59,007
<EPS-BASIC> 3.06
<EPS-DILUTED> 3.02
<YIELD-ACTUAL> 0
<LOANS-NON> 0
<LOANS-PAST> 0
<LOANS-TROUBLED> 0
<LOANS-PROBLEM> 0
<ALLOWANCE-OPEN> 0
<CHARGE-OFFS> 0
<RECOVERIES> 0
<ALLOWANCE-CLOSE> 0
<ALLOWANCE-DOMESTIC> 0
<ALLOWANCE-FOREIGN> 0
<ALLOWANCE-UNALLOCATED> 0
</TABLE>
