<TABLE> <S> <C>
<ARTICLE> 9
<LEGEND>
This schedule contains summary financial information extracted from BOK
Financial Corporation's 10-Q for the period ended June 30, 2000 and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
<CIK> 0000875357
<NAME> BOK Financial Corporation
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-mos
<FISCAL-YEAR-END> Dec-31-2000
<PERIOD-END> Jun-30-2000
<CASH> 438,921
<INT-BEARING-DEPOSITS> 0
<FED-FUNDS-SOLD> 112,636
<TRADING-ASSETS> 20,051
<INVESTMENTS-HELD-FOR-SALE> 2,547,066
<INVESTMENTS-CARRYING> 227,449
<INVESTMENTS-MARKET> 226,248
<LOANS> 4,941,322
<ALLOWANCE> 79,405
<TOTAL-ASSETS> 8,819,223
<DEPOSITS> 5,600,908
<SHORT-TERM> 2,001,250
<LIABILITIES-OTHER> 78,715
<LONG-TERM> 473,869
13
12
<COMMON> 3
<OTHER-SE> 605,837
<TOTAL-LIABILITIES-AND-EQUITY> 8,819,223
<INTEREST-LOAN> 109,198
<INTEREST-INVEST> 46,121
<INTEREST-OTHER> 995
<INTEREST-TOTAL> 156,314
<INTEREST-DEPOSIT> 48,798
<INTEREST-EXPENSE> 88,444
<INTEREST-INCOME-NET> 67,870
<LOAN-LOSSES> 3,534
<SECURITIES-GAINS> (682)
<EXPENSE-OTHER> 74,917
<INCOME-PRETAX> 36,767
<INCOME-PRE-EXTRAORDINARY> 24,194
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 24,194
<EPS-BASIC> 0.48
<EPS-DILUTED> 0.44
<YIELD-ACTUAL> 3.66
<LOANS-NON> 25,387
<LOANS-PAST> 9,828
<LOANS-TROUBLED> 0
<LOANS-PROBLEM> 86,365
<ALLOWANCE-OPEN> 77,828
<CHARGE-OFFS> 2,867
<RECOVERIES> 910
<ALLOWANCE-CLOSE> 79,405
<ALLOWANCE-DOMESTIC> 79,405
<ALLOWANCE-FOREIGN> 0
<ALLOWANCE-UNALLOCATED> 0
</TABLE>