<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
ACCOMPANYING CONDENSED COMBINED FINANCIAL STATEMENTS OF KEY3MEDIA GROUP, INC.
FOR THE FISCAL QUARTER ENDED JUNE 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C> <C>
<PERIOD-TYPE> 3-MOS 3-MOS
<FISCAL-YEAR-END> DEC-31-2000 DEC-31-1999
<PERIOD-START> APR-01-2000 APR-01-1999
<PERIOD-END> JUN-30-2000 JUN-30-1999
<CASH> 67,534 12,906
<SECURITIES> 0 0
<RECEIVABLES> 71,695 88,560
<ALLOWANCES> 1,872 1,757
<INVENTORY> 273 396
<CURRENT-ASSETS> 156,860 122,348
<PP&E> 31,553 27,793
<DEPRECIATION> 22,538 18,236
<TOTAL-ASSETS> 1,025,718 1,032,663
<CURRENT-LIABILITIES> 173,027 182,636
<BONDS> 382,002 382,002
0 0
0 0
<COMMON> 0 0
<OTHER-SE> 400,797 415,923
<TOTAL-LIABILITY-AND-EQUITY> 1,025,718 1,032,663
<SALES> 93,916 74,066
<TOTAL-REVENUES> 93,916 74,066
<CGS> 62,074 50,249
<TOTAL-COSTS> 62,074 50,249
<OTHER-EXPENSES> (287) (791)
<LOSS-PROVISION> 510 386
<INTEREST-EXPENSE> 7,008 5,816
<INCOME-PRETAX> 25,121 18,792
<INCOME-TAX> 9,972 7,453
<INCOME-CONTINUING> 15,149 11,339
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> 15,149 11,339
<EPS-BASIC> 0.23 0.17
<EPS-DILUTED> 0.16 0.12
</TABLE>