<TABLE> <S> <C>
<PAGE>
<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED FINANCIAL STATEMENTS OF ROCKDALE NATIONAL BANCSHARES, INC. FOR THE
THREE-MONTH PERIOD FROM JANUARY 1, 2000 THROUGH JUNE 30, 2000 AND IS QUALIFIED
IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 4,225,044
<INT-BEARING-DEPOSITS> 161,243
<FED-FUNDS-SOLD> 5,090,000
<TRADING-ASSETS> 0
<INVESTMENTS-HELD-FOR-SALE> 0
<INVESTMENTS-CARRYING> 0
<INVESTMENTS-MARKET> 10,496,241
<LOANS> 44,425,997
<ALLOWANCE> 658,421
<TOTAL-ASSETS> 67,616,387
<DEPOSITS> 59,091,130
<SHORT-TERM> 0
<LIABILITIES-OTHER> 163,253
<LONG-TERM> 2,500,000
0
0
<COMMON> 676,188
<OTHER-SE> 5,185,816
<TOTAL-LIABILITIES-AND-EQUITY> 67,616,387
<INTEREST-LOAN> 2,053,110
<INTEREST-INVEST> 323,052
<INTEREST-OTHER> 128,215
<INTEREST-TOTAL> 2,504,377
<INTEREST-DEPOSIT> 1,041,047
<INTEREST-EXPENSE> 77,680
<INTEREST-INCOME-NET> 1,385,650
<LOAN-LOSSES> 119,392
<SECURITIES-GAINS> 0
<EXPENSE-OTHER> 1,075,653
<INCOME-PRETAX> 436,987
<INCOME-PRE-EXTRAORDINARY> 436,987
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 436,987
<EPS-BASIC> .65
<EPS-DILUTED> .58
<YIELD-ACTUAL> 4.80
<LOANS-NON> 0
<LOANS-PAST> 0
<LOANS-TROUBLED> 0
<LOANS-PROBLEM> 0
<ALLOWANCE-OPEN> 119,392
<CHARGE-OFFS> 9,456
<RECOVERIES> 17,461
<ALLOWANCE-CLOSE> 531,024
<ALLOWANCE-DOMESTIC> 0
<ALLOWANCE-FOREIGN> 0
<ALLOWANCE-UNALLOCATED> 0
</TABLE>