The average price of a gallon of regular unleaded in Illinois is $2.30. That, according to AAA, is nice cents cheaper than last week's average.
The cheapest gas can be found in the City of Chicago, at $2.76 per gallon. By contrast, the cheapest gasoline is in Springfield, with an average of $2.03 per gallon.
Finally, Rockford's per-gallon average gas price is $2.29.
