Costco Gas Prices in Chicago, IL

Chicago, Illinois has 2 Costco fuel centers serving members in the area. Across Chicago, regular gas averages $4.849 and premium runs about $1.10 higher at $5.949. That's about $0.05 above the Illinois statewide average of $4.799. Within Chicago, Costco Lincoln Park posts the lowest regular at $4.799 and Chicago South Loop the highest at $4.899 — a $0.10 spread worth checking before you fuel up. Across Chicago, regular pump prices have climbed about $0.22 over the past two weeks, from $4.629 two weeks ago. Premium has climbed about $0.18 over the same period. None of the Chicago Costco fuel centers currently sell diesel.