<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
THE ANNUAL REPORT OF AMERICAN CENTURY CALIFORNIA TAX-FREE & MUNICIPAL
FUNDS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH REPORT.
</LEGEND>
<CIK> 0000717316
<NAME> AMERICAN CENTURY CALIFORNIA TAX-FREE & MUNICIPAL FUNDS
<SERIES>
<NUMBER> 41
<NAME> CALIFORNIA LONG-TERM TAX-FREE FUND
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> AUG-31-2000
<PERIOD-END> AUG-31-2000
<INVESTMENTS-AT-COST> 295,252,413
<INVESTMENTS-AT-VALUE> 306,785,100
<RECEIVABLES> 3,757,719
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 310,542,819
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 7,063,072
<TOTAL-LIABILITIES> 7,063,072
<SENIOR-EQUITY> 273,135
<PAID-IN-CAPITAL-COMMON> 296,740,526
<SHARES-COMMON-STOCK> 27,313,536
<SHARES-COMMON-PRIOR> 27,795,144
<ACCUMULATED-NII-CURRENT> (5,066,601)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 11,532,686
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 303,479,746
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 17,363,990
<OTHER-INCOME> 0
<EXPENSES-NET> 1,543,481
<NET-INVESTMENT-INCOME> 15,820,509
<REALIZED-GAINS-CURRENT> (4,159,995)
<APPREC-INCREASE-CURRENT> 10,026,558
<NET-CHANGE-FROM-OPS> 21,687,072
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (15,820,509)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 8,594,787
<NUMBER-OF-SHARES-REDEEMED> (12,925,328)
<SHARES-REINVESTED> 1,003,841
<NET-CHANGE-IN-ASSETS> (29,147,467)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (2,723,555)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,532,838
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,543,481
<AVERAGE-NET-ASSETS> 302,116,317
<PER-SHARE-NAV-BEGIN> 10.86
<PER-SHARE-NII> 0.56
<PER-SHARE-GAIN-APPREC> 0.25
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> (0.56)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 11.11
<EXPENSE-RATIO> 0.51
</TABLE>
