<TABLE> <S> <C>

<PAGE>
<ARTICLE> 9

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   12-MOS                   12-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1996             DEC-31-1995
<PERIOD-END>                               DEC-31-1997             DEC-31-1996             DEC-31-1995
<CASH>                                          13,886                  15,070                  14,923
<INT-BEARING-DEPOSITS>                               0                       0                       0
<FED-FUNDS-SOLD>                                32,900                  30,500                  22,970
<TRADING-ASSETS>                                     0                       0                       0
<INVESTMENTS-HELD-FOR-SALE>                    110,064                 137,792                 106,901
<INVESTMENTS-CARRYING>                         131,299                  72,614                  40,148
<INVESTMENTS-MARKET>                           131,660                  72,315                  40,386
<LOANS>                                        572,869                 591,621                 539,692
<ALLOWANCE>                                      9,801                   9,231                   8,033
<TOTAL-ASSETS>                                 883,494                 875,180                 743,214
<DEPOSITS>                                     798,593                 794,201                 657,012
<SHORT-TERM>                                         0                       0                       0
<LIABILITIES-OTHER>                              6,422                   8,437                  17,544
<LONG-TERM>                                          0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                         4,428                   4,428                   2,952
<OTHER-SE>                                      74,051                  68,114                  65,706
<TOTAL-LIABILITIES-AND-EQUITY>                 883,494                 875,180                 743,214
<INTEREST-LOAN>                                 52,712                  49,405                  44,806
<INTEREST-INVEST>                               14,492                  14,501                   8,637
<INTEREST-OTHER>                                 1,551                   1,942                   2,058
<INTEREST-TOTAL>                                68,755                  65,848                  55,501
<INTEREST-DEPOSIT>                              34,743                  33,798                  27,692
<INTEREST-EXPENSE>                              34,743                  33,849                  27,692
<INTEREST-INCOME-NET>                           34,012                  31,999                  27,809
<LOAN-LOSSES>                                    1,975                   2,300                     600
<SECURITIES-GAINS>                                  15                   (199)                     349
<EXPENSE-OTHER>                                 21,456                  21,374                  19,279
<INCOME-PRETAX>                                 14,227                  11,674                  11,236
<INCOME-PRE-EXTRAORDINARY>                      14,227                  11,674                  11,236
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     8,632                   9,321                   6,786
<EPS-PRIMARY>                                     2.26                    2.38                    1.67
<EPS-DILUTED>                                     2.20                    2.35                    1.65
<YIELD-ACTUAL>                                    4.05                    3.95                    4.09
<LOANS-NON>                                      5,846                   4,585                   5,591
<LOANS-PAST>                                        76                     214                     172
<LOANS-TROUBLED>                                     0                     571                   1,340
<LOANS-PROBLEM>                                  1,583                   2,171                   2,430
<ALLOWANCE-OPEN>                                 9,231                   8,033                   9,402
<CHARGE-OFFS>                                    1,939                   1,558                   2,384
<RECOVERIES>                                       534                     456                     415
<ALLOWANCE-CLOSE>                                9,801                   9,231                   8,033
<ALLOWANCE-DOMESTIC>                             9,801                   9,231                   8,033
<ALLOWANCE-FOREIGN>                                  0                       0                       0
<ALLOWANCE-UNALLOCATED>                              0                       0                       0


</TABLE>