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Compared to the national average of $3.45, gas in Illinois is $0.30 more expensive.
Don't forget to calculate your tax burden. Check out our comprehensive sales tax calculator for Illinois.
Calculate Illinois Sales TaxGas prices in Illinois are currently down due to localized supply chain factors and national crude oil market movements.
Each state, including Illinois, has its own fuel excise tax which is included in the price you see at the pump.
Typically, larger cities with more competition have lower prices, while remote areas in Illinois may charge more due to transportation costs.