Costco Gas Prices in Mount Prospect, IL
1 Costco fuel center in Mount Prospect · 0 of 1 sell diesel
Mount Prospect Avg Regular
$4.059
per gallon
Mount Prospect Avg Premium
$5.199
per gallon
Mount Prospect Avg Diesel
Not sold at any station in Mount Prospect
Mount Prospect regular is$0.020belowthe Illinois average ($4.079)
vs U.S. average$0.131below($4.190)
Premium runs$1.140above regular on average
Mount Prospect, Illinois has 1 Costco fuel center serving members in the area. Across Mount Prospect, regular gas averages $4.059 and premium runs about $1.140 higher at $5.199. That's about $0.020 below the Illinois statewide average of $4.079. Across Mount Prospect, regular pump prices have eased about $0.100 over the past month, from $4.159 a month ago. Premium has eased about $0.030 over the same period. None of the Mount Prospect Costco fuel centers currently sell diesel.