Costco Gas Prices in Chicago, IL

Chicago, Illinois has 3 Costco fuel centers serving members in the area. Across Chicago, regular gas averages $4.866 and premium runs about $1.200 higher at $6.066. That's about $0.261 above the Illinois statewide average of $4.604. Within Chicago, Costco Bedford Park Business Center posts the lowest regular at $4.499 and Lincoln Park the highest at $5.199 — a $0.700 spread worth checking before you fuel up. Across Chicago, regular pump prices have eased about $0.233 over the past month, from $5.099 a month ago. Premium has eased about $0.133 over the same period. None of the Chicago Costco fuel centers currently sell diesel.