<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE CONDENSED CONSOLIDATED BALANCE SHEET AND THE CONDENSED CONSOLIDATED STATEMENT OF INCOME FOR THE SIX MONTHS ENDED JUNE 30, 2000, CONTAINED IN TRANSCONTINENTAL GAS PIPELINE CORPORATION'S 2000 SECOND QUARTER REPORT ON FORM 10-Q AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-END> JUN-30-2000 <CASH> 296 <SECURITIES> 0 <RECEIVABLES> 35,117 <ALLOWANCES> 0 <INVENTORY> 63,284 <CURRENT-ASSETS> 791,835 <PP&E> 4,555,862 <DEPRECIATION> 864,345 <TOTAL-ASSETS> 4,734,041 <CURRENT-LIABILITIES> 439,110 <BONDS> 975,095 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 2,321,094 <TOTAL-LIABILITY-AND-EQUITY> 4,734,041 <SALES> 454,584 <TOTAL-REVENUES> 924,283 <CGS> 454,591 <TOTAL-COSTS> 666,885 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 36,783 <INCOME-PRETAX> 185,613 <INCOME-TAX> 69,692 <INCOME-CONTINUING> 115,921 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 115,921 <EPS-BASIC> 0 <EPS-DILUTED> 0