<TABLE> <S> <C>
<ARTICLE> UT
<CIK> 0000022099
<NAME> COLUMBIA ENERGY GROUP AND SUBSIDIARIES
<SUBSIDIARY>
<NUMBER> 1
<NAME> CEG
<MULTIPLIER> 1,000
<S> <C> <C>
<PERIOD-TYPE> 3-MOS 6-MOS
<FISCAL-YEAR-END> DEC-31-2000 DEC-31-2000
<PERIOD-START> APR-01-2000 JAN-01-2000
<PERIOD-END> JUN-30-2000 JUN-30-2000
<BOOK-VALUE> PER-BOOK PER-BOOK
<TOTAL-NET-UTILITY-PLANT> 4,260,400 4,260,400
<OTHER-PROPERTY-AND-INVEST> 1,127,500 1,127,500
<TOTAL-CURRENT-ASSETS> 1,041,900 1,041,900
<TOTAL-DEFERRED-CHARGES> 11,400 11,400
<OTHER-ASSETS> 350,600 350,600
<TOTAL-ASSETS> 6,791,800 6,791,800
<COMMON> 800 800
<CAPITAL-SURPLUS-PAID-IN> 1,616,100 1,616,100
<RETAINED-EARNINGS> 748,100 748,100
<TOTAL-COMMON-STOCKHOLDERS-EQ> 2,115,600 2,115,600
0 0
0 0
<LONG-TERM-DEBT-NET> 1,639,200 1,639,200
<SHORT-TERM-NOTES> 0 0
<LONG-TERM-NOTES-PAYABLE> 0 0
<COMMERCIAL-PAPER-OBLIGATIONS> 325,400 325,400
<LONG-TERM-DEBT-CURRENT-PORT> 311,100 311,100
0 0
<CAPITAL-LEASE-OBLIGATIONS> 2,500 2,500
<LEASES-CURRENT> 0 0
<OTHER-ITEMS-CAPITAL-AND-LIAB> 2,709,100 2,709,100
<TOT-CAPITALIZATION-AND-LIAB> 6,791,800 6,791,800
<GROSS-OPERATING-REVENUE> 462,800 1,449,000
<INCOME-TAX-EXPENSE> 45,200 134,100
<OTHER-OPERATING-EXPENSES> 307,100 652,800
<TOTAL-OPERATING-EXPENSES> 383,300 1,095,800
<OPERATING-INCOME-LOSS> 79,500 353,200
<OTHER-INCOME-NET> 93,800 98,100
<INCOME-BEFORE-INTEREST-EXPEN> 173,300 451,300
<TOTAL-INTEREST-EXPENSE> 45,200 90,900
<NET-INCOME> 47,700 197,400
0 0
<EARNINGS-AVAILABLE-FOR-COMM> 47,700 197,400
<COMMON-STOCK-DIVIDENDS> 36,200 35,100
<TOTAL-INTEREST-ON-BONDS> 34,100 68,200
<CASH-FLOW-OPERATIONS> 320,000 527,700
<EPS-BASIC> 0.60 2.45
<EPS-DILUTED> 0.59 2.43
</TABLE>