Costco Gas Prices in Mount Prospect, IL
1 Costco fuel center in Mount Prospect · 0 of 1 sell diesel
Mount Prospect Avg Regular
$4.599
per gallon
Mount Prospect Avg Premium
$5.699
per gallon
Mount Prospect Avg Diesel
Not sold at any station in Mount Prospect
Mount Prospect regular is$0.005belowthe Illinois average ($4.604)
vs U.S. average$0.173above($4.426)
Premium runs$1.100above regular on average
Mount Prospect, Illinois has 1 Costco fuel center serving members in the area. Across Mount Prospect, regular gas averages $4.599 and premium runs about $1.100 higher at $5.699. That's about $0.005 below the Illinois statewide average of $4.604. Across Mount Prospect, regular pump prices have eased about $0.300 over the past month, from $4.899 a month ago. Premium has eased about $0.300 over the same period. None of the Mount Prospect Costco fuel centers currently sell diesel.