Costco Gas Prices in Mount Prospect, IL
1 Costco fuel center in Mount Prospect · 0 of 1 sell diesel
Mount Prospect Avg Regular
$3.839
per gallon
Mount Prospect Avg Premium
$4.849
per gallon
Mount Prospect Avg Diesel
Not sold at any station in Mount Prospect
Mount Prospect regular is$0.09abovethe Illinois average ($3.744)
vs U.S. average$0.02above($3.823)
Premium runs$1.01above regular on average
Mount Prospect, Illinois has 1 Costco fuel center serving members in the area. Across Mount Prospect, regular gas averages $3.839 and premium runs about $1.01 higher at $4.849. That's about $0.09 above the Illinois statewide average of $3.744. Across Mount Prospect, regular pump prices have eased about $0.42 over the past month, from $4.259 a month ago. Premium has eased about $0.55 over the same period. None of the Mount Prospect Costco fuel centers currently sell diesel.