The average Illinois price for a gallon of regular unleaded gasoline is $2.33. This is identical to last week's price.
AAA reports that the most expensive gasoline can be found in the City of Chicago, at $2.73 per gallon. By contrast, Champaign-Urbana has the cheapest gasoline, at $2.06 per gallon.
Rockford's average price is $2.24 per gallon, which is five cents cheaper than last week's price.