<ARTICLE> 5
<LEGEND>
The following schedule contains summarized financial information extracted
from the Questar Corporation Consolidated Statements of Income and Balance
Sheets for the period ended September 30, 1997, and is qualified in its
entirety by reference to such unaudited financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               SEP-30-1997
<CASH>                                           1,723
<SECURITIES>                                         0
<RECEIVABLES>                                  101,879
<ALLOWANCES>                                         0
<INVENTORY>                                     28,673
<CURRENT-ASSETS>                               205,152
<PP&E>                                       2,678,787
<DEPRECIATION>                               1,186,013
<TOTAL-ASSETS>                               1,828,886
<CURRENT-LIABILITIES>                          210,932
<BONDS>                                        526,727
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       292,884
<OTHER-SE>                                     536,530
<TOTAL-LIABILITY-AND-EQUITY>                 1,828,886
<SALES>                                              0
<TOTAL-REVENUES>                               648,463
<CGS>                                                0
<TOTAL-COSTS>                                  416,097
<OTHER-EXPENSES>                               116,654
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              32,162
<INCOME-PRETAX>                                101,918
<INCOME-TAX>                                    31,611
<INCOME-CONTINUING>                             70,307
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    70,307
<EPS-PRIMARY>                                     1.71
<EPS-DILUTED>                                     1.71