Costco Gas Prices in Mount Prospect, IL
1 Costco fuel center in Mount Prospect · 0 of 1 sell diesel
Mount Prospect Avg Regular
$3.999
per gallon
Mount Prospect Avg Premium
$5.099
per gallon
Mount Prospect Avg Diesel
Not sold at any station in Mount Prospect
Mount Prospect regular is$0.08abovethe Illinois average ($3.915)
vs U.S. average$0.07above($3.933)
Premium runs$1.10above regular on average