State avg
$4.36
▼ $0.18 this week
Cheapest city
Champaign
$4.01 avg
Most expensive
Chicago
$4.98 avg
vs national avg
+$0.27
Above average
30-day price trend — regular
Illinois avg
Illinois state gas tax: 45¢/gal · Federal tax: 18.4¢/gal · Total tax: ~63¢/gal
Illinois has among the highest gas taxes in the Midwest, and Chicago adds its own city and county taxes on top, making Chicago prices some of the highest in the interior US. Outside Chicago, prices drop significantly. The state has pipeline access from Gulf Coast refineries but high taxes offset the geographic advantage.
Sources: AAA State Gas Price Averages · EIA Gasoline & Diesel Update
Nearby states
Indiana$3.342
Missouri$3.744
Iowa$3.692
Wisconsin$3.859
All states →map