IL · Updated July 22, 2026
Illinois Gas Prices
Current retail average for regular gasoline in Illinois, with daily history tracked against the US national average.
Current Price
$4.17
per gallon
30-Day Change
-0.2%
1-Year Change
—
vs National
+$0.13
Nat'l $4.04
Illinois Price History
State average vs national average
Related Tool
What does Illinois gas cost your commute?
Plug your miles and wage into DriveTax to see how much Illinois's $4.17/gal drains your paycheck each year.