<TABLE> <S> <C>

<PAGE>
<ARTICLE> 9
<CIK> 0000760327
<NAME> LOGAN COUNTY BANC SHARES, INC.
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   9-MOS                   9-MOS                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1998             SEP-30-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1998             JAN-01-1997             JAN-01-1997
<PERIOD-END>                               SEP-30-1998             SEP-30-1997             DEC-31-1997
<CASH>                                           5,354                   5,023                   5,267
<INT-BEARING-DEPOSITS>                               0                       0                       0
<FED-FUNDS-SOLD>                                 9,360                   7,860                   8,910
<TRADING-ASSETS>                                     0                       0                       0
<INVESTMENTS-HELD-FOR-SALE>                     22,462                  16,937                  15,958
<INVESTMENTS-CARRYING>                           2,496                   4,060                   3,995
<INVESTMENTS-MARKET>                             2,534                   4,073                   4,026
<LOANS>                                         92,800                  82,515                  84,898
<ALLOWANCE>                                        732                     595                     673
<TOTAL-ASSETS>                                 135,709                 119,338                 121,850
<DEPOSITS>                                     120,806                 106,154                 108,107
<SHORT-TERM>                                         0                       0                       0
<LIABILITIES-OTHER>                                906                     675                     760
<LONG-TERM>                                          0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                         1,300                   1,274                   1,300
<OTHER-SE>                                      12,697                  11,235                  11,683
<TOTAL-LIABILITIES-AND-EQUITY>                 135,709                 119,338                 121,850
<INTEREST-LOAN>                                  5,791                   4,963                       0
<INTEREST-INVEST>                                  982                   1,080                       0
<INTEREST-OTHER>                                   567                     349                       0
<INTEREST-TOTAL>                                 7,340                   6,392                       0
<INTEREST-DEPOSIT>                               3,142                   2,631                       0
<INTEREST-EXPENSE>                               3,142                   2,631                       0
<INTEREST-INCOME-NET>                            4,198                   3,761                       0
<LOAN-LOSSES>                                       68                      30                       0
<SECURITIES-GAINS>                                   0                       0                       0
<EXPENSE-OTHER>                                  2,581                   2,431                       0
<INCOME-PRETAX>                                  2,374                   2,243                       0
<INCOME-PRE-EXTRAORDINARY>                       1,501                   1,490                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     1,501                   1,490                       0
<EPS-PRIMARY>                                     3.14                    3.19                       0
<EPS-DILUTED>                                     3.14                    3.19                       0
<YIELD-ACTUAL>                                   3.332                   3.395                       0
<LOANS-NON>                                          0                       0                       0
<LOANS-PAST>                                     3,790                     254                       0
<LOANS-TROUBLED>                                   843                     838                       0
<LOANS-PROBLEM>                                    546                     686                       0
<ALLOWANCE-OPEN>                                   673                     681                       0
<CHARGE-OFFS>                                       11                     117                       0
<RECOVERIES>                                         3                       1                       0
<ALLOWANCE-CLOSE>                                  732                     595                       0
<ALLOWANCE-DOMESTIC>                               732                     595                       0
<ALLOWANCE-FOREIGN>                                  0                       0                       0
<ALLOWANCE-UNALLOCATED>                              0                       0                       0
        

</TABLE>