The average price of a gallon of unleaded gas in the state of Illinois is $2.27. This is three cents cheaper than last week, according to AAA.
The most expensive gas in the state can be found in the City of Chicago, at$2.69/gallon. The cheapest gasoline is in Champaign-Urbana, at $1.96/gallon.
Rockford's average per-gallon gas price is $2.19. This is ten cents cheaper than last week.
