<TABLE> <S> <C>
<PAGE>
<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FOR UNION
NATIONAL BANCORP'S FORM 10-Q FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2000 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 49,377
<INT-BEARING-DEPOSITS> 4,635
<FED-FUNDS-SOLD> 4,251
<TRADING-ASSETS> 0
<INVESTMENTS-HELD-FOR-SALE> 317,360
<INVESTMENTS-CARRYING> 91,113
<INVESTMENTS-MARKET> 0
<LOANS> 1,228,179
<ALLOWANCE> 13,310
<TOTAL-ASSETS> 1,763,941
<DEPOSITS> 1,325,786
<SHORT-TERM> 118,064
<LIABILITIES-OTHER> 18,824
<LONG-TERM> 149,546
0
0
<COMMON> 55,063
<OTHER-SE> 96,658
<TOTAL-LIABILITIES-AND-EQUITY> 1,763,941
<INTEREST-LOAN> 74,626
<INTEREST-INVEST> 18,247
<INTEREST-OTHER> 557
<INTEREST-TOTAL> 93,430
<INTEREST-DEPOSIT> 33,618
<INTEREST-EXPENSE> 44,696
<INTEREST-INCOME-NET> 48,735
<LOAN-LOSSES> 2,511
<SECURITIES-GAINS> 633
<EXPENSE-OTHER> 47,292
<INCOME-PRETAX> 20,757
<INCOME-PRE-EXTRAORDINARY> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 14,477
<EPS-BASIC> 1.31
<EPS-DILUTED> 1.31
<YIELD-ACTUAL> 7.56
<LOANS-NON> 2,897
<LOANS-PAST> 1,910
<LOANS-TROUBLED> 1,270
<LOANS-PROBLEM> 24,185
<ALLOWANCE-OPEN> 13,068
<CHARGE-OFFS> 4,227
<RECOVERIES> 1,958
<ALLOWANCE-CLOSE> 13,310
<ALLOWANCE-DOMESTIC> 12,356
<ALLOWANCE-FOREIGN> 0
<ALLOWANCE-UNALLOCATED> 954
</TABLE>