<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION
EXTRACTED FROM THE SEMI-ANNUAL REPORT OF AMERICAN CENTURY TARGET
MATURITIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH REPORT.
</LEGEND>
<CIK> 0000757928
<NAME> AMERICAN CENTURY TARGET MATURITIES TRUST
<SERIES>
<NUMBER> 41
<NAME> TARGET 2010 - INVESTOR CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 217,239,471
<INVESTMENTS-AT-VALUE> 216,710,541
<RECEIVABLES> 0
<ASSETS-OTHER> 1,001,172
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 217,711,713
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 424,933
<TOTAL-LIABILITIES> 424,933
<SENIOR-EQUITY> 38,072
<PAID-IN-CAPITAL-COMMON> 217,584,026
<SHARES-COMMON-STOCK> 3,807,172
<SHARES-COMMON-PRIOR> 4,366,827
<ACCUMULATED-NII-CURRENT> 3,207,059
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3,013,447)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (528,930)
<NET-ASSETS> 217,286,780
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 7,335,165
<OTHER-INCOME> 0
<EXPENSES-NET> 659,079
<NET-INVESTMENT-INCOME> 6,676,086
<REALIZED-GAINS-CURRENT> (2,370,219)
<APPREC-INCREASE-CURRENT> 1,482,169
<NET-CHANGE-FROM-OPS> 5,788,036
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 13,287,016
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,582,535
<NUMBER-OF-SHARES-REDEEMED> (2,392,200)
<SHARES-REINVESTED> 250,010
<NET-CHANGE-IN-ASSETS> (24,513,536)
<ACCUMULATED-NII-PRIOR> 3,129,184
<ACCUMULATED-GAINS-PRIOR> 1,495,282
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 651,769
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 659,079
<AVERAGE-NET-ASSETS> 221,971,472
<PER-SHARE-NAV-BEGIN> 55.10
<PER-SHARE-NII> 1.63
<PER-SHARE-GAIN-APPREC> 0.01
<PER-SHARE-DIVIDEND> 3.21
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 56.74
<EXPENSE-RATIO> 0.59
</TABLE>