<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
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          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>