Costco Gas Prices in St. George, UT
1 Costco fuel center in St. George · all 1 sell diesel
St. George Avg Regular
$3.899
per gallon
St. George Avg Premium
$4.459
per gallon
St. George Avg Diesel
$4.359
per gallon
St. George regular is$0.38abovethe Utah average ($3.517)
vs U.S. average$0.07above($3.826)
Premium runs$0.56above regular on average
St. George, Utah has 1 Costco fuel center serving members in the area. Across St. George, regular gas averages $3.899, premium runs about $0.56 higher at $4.459, and diesel sits at $4.359. That's about $0.38 above the Utah statewide average of $3.517. Across St. George, regular pump prices have eased about $0.46 over the past month, from $4.359 a month ago. Premium has eased about $0.40 and diesel has eased about $0.80 over the same period.