<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000795264
<NAME> THOMPSON PLUMB FUNDS, INC.
<SERIES>
<NUMBER> 3
<NAME> THOMPSON PLUMB GROWTH FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> NOV-30-2000
<PERIOD-START> DEC-01-1999
<PERIOD-END> MAY-31-2000
<INVESTMENTS-AT-COST> 62804
<INVESTMENTS-AT-VALUE> 73757
<RECEIVABLES> 441
<ASSETS-OTHER> 23
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 74221
<PAYABLE-FOR-SECURITIES> 346
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 99
<TOTAL-LIABILITIES> 445
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 51231
<SHARES-COMMON-STOCK> 1705
<SHARES-COMMON-PRIOR> 1901
<ACCUMULATED-NII-CURRENT> (33)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 11625
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 10953
<NET-ASSETS> 73776
<DIVIDEND-INCOME> 435
<INTEREST-INCOME> 7
<OTHER-INCOME> 0
<EXPENSES-NET> 475
<NET-INVESTMENT-INCOME> (33)
<REALIZED-GAINS-CURRENT> 11633
<APPREC-INCREASE-CURRENT> (5064)
<NET-CHANGE-FROM-OPS> 6536
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (2950)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 163
<NUMBER-OF-SHARES-REDEEMED> (433)
<SHARES-REINVESTED> 74
<NET-CHANGE-IN-ASSETS> (4160)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 2942
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 354
<INTEREST-EXPENSE> 6
<GROSS-EXPENSE> 498
<AVERAGE-NET-ASSETS> 73728
<PER-SHARE-NAV-BEGIN> 41.00
<PER-SHARE-NII> (0.02)
<PER-SHARE-GAIN-APPREC> 3.84
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.56)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 43.26
<EXPENSE-RATIO> 1.28
</TABLE>
