<ARTICLE> 5
<LEGEND>
The following schedule contains summarized financial information extracted
from the Questar Corporation Consolidated Statements of Income and Balance
Sheet for the period ended June 30, 1997, and is qualified in its entirety
by reference to such unaudited financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                               0
<SECURITIES>                                         0
<RECEIVABLES>                                  108,729
<ALLOWANCES>                                         0
<INVENTORY>                                     17,508
<CURRENT-ASSETS>                               187,319
<PP&E>                                       2,631,139
<DEPRECIATION>                               1,156,602
<TOTAL-ASSETS>                               1,763,995
<CURRENT-LIABILITIES>                          178,618
<BONDS>                                        520,116
<PREFERRED-MANDATORY>                            4,808
<PREFERRED>                                          0
<COMMON>                                       293,947
<OTHER-SE>                                     517,785
<TOTAL-LIABILITY-AND-EQUITY>                 1,763,995
<SALES>                                              0
<TOTAL-REVENUES>                               509,831
<CGS>                                                0
<TOTAL-COSTS>                                  332,407
<OTHER-EXPENSES>                                82,054
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              21,486
<INCOME-PRETAX>                                 80,543
<INCOME-TAX>                                    25,962
<INCOME-CONTINUING>                             54,581
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    54,581
<EPS-PRIMARY>                                     1.32
<EPS-DILUTED>                                     1.32