<ARTICLE> 5
<LEGEND>
Exhibit 27
The following schedule contains summarized financial information extracted
from the  Questar Corporation consolidated Statements of Income and the Balance
Sheet for the period ended September 30, 2000, and is qualified in its
entirety by reference to such audited financial statements.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               SEP-30-2000
<CASH>                                          25,386
<SECURITIES>                                         0
<RECEIVABLES>                                  155,554
<ALLOWANCES>                                         0
<INVENTORY>                                     36,770
<CURRENT-ASSETS>                               237,749
<PP&E>                                       3,461,958
<DEPRECIATION>                               1,568,810
<TOTAL-ASSETS>                               2,304,636
<CURRENT-LIABILITIES>                          340,923
<BONDS>                                        724,052
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       261,432
<OTHER-SE>                                     700,300
<TOTAL-LIABILITY-AND-EQUITY>                 2,304,636
<SALES>                                              0
<TOTAL-REVENUES>                               814,361
<CGS>                                           18,011
<TOTAL-COSTS>                                  497,924
<OTHER-EXPENSES>                               143,904
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              47,855
<INCOME-PRETAX>                                161,971
<INCOME-TAX>                                    58,273
<INCOME-CONTINUING>                            103,698
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   103,698
<EPS-BASIC>                                       1.29
<EPS-DILUTED>                                     1.29