<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
UNITEDGLOBALCOM, INC.'S FORM 10-Q FOR THE THREE MONTHS ENDED SEPTEMBER 30, 2000,
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> SEP-30-2000
<CASH> 460,679
<SECURITIES> 929,105
<RECEIVABLES> 166,107
<ALLOWANCES> 48,671
<INVENTORY> 150,511
<CURRENT-ASSETS> 1,973,122
<PP&E> 3,713,798
<DEPRECIATION> 752,111
<TOTAL-ASSETS> 9,714,379
<CURRENT-LIABILITIES> 1,770,758
<BONDS> 7,306,871
27,719
708,867
<COMMON> 1,550,661
<OTHER-SE> (2,051,783)
<TOTAL-LIABILITY-AND-EQUITY> 9,714,379
<SALES> 316,153
<TOTAL-REVENUES> 316,153
<CGS> 413,818
<TOTAL-COSTS> 391,629
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 219,654
<INCOME-PRETAX> (605,042)
<INCOME-TAX> 4,151
<INCOME-CONTINUING> (353,937)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (353,937)
<EPS-BASIC> (3.81)
<EPS-DILUTED> (3.81)
</TABLE>