Gas prices in Illinois

About gas prices in Illinois

Illinois has one of the more complex gas pricing maps in the country: the state tax is around 47 cents, but Cook County and the city of Chicago add their own per-gallon excise on top, pushing pump prices in downtown Chicago to among the highest in the Midwest. Stations in DuPage and Will counties just outside Cook routinely run 30 to 50 cents cheaper for the same brand. Costco, Sam's Club, Thorntons, and Casey's General Store are the dependable value picks across Chicago and its suburbs, with Costco in Schaumburg and Naperville especially popular.