U.S. state · U.S.
As of early October 2026, a gallon of regular gasoline in Illinois averages $4.70 — that is $1.24 per litre, and ranks #86 of 225 places we track, where #1 is the cheapest.
High-tax / special-blend U.S. state
Illinois carries high state fuel taxes, and West-Coast and island states also require special clean-burning blends and pay to ship fuel long distances — that is what pushes it well above the U.S. average.
An estimated split of a $4.70 gallon in Illinois. Crude oil trades as one global price, so the part that differs between countries is mostly tax.
| Component | Per gallon | Per litre |
|---|---|---|
| Crude | $2.29 | $0.60 |
| Refining | $0.60 | $0.16 |
| Distribution | $0.93 | $0.24 |
| Tax | $0.89 | $0.23 |
| Pump price | $4.70 | $1.24 |
| Comparison | Per gallon | Difference |
|---|---|---|
| Illinois | $4.70 | — |
| World average of all 225 | $5.55 | −$0.85 |
| U.S. average | $4.38 | +$0.32 |
| Cheapest anywhere — Libya | $0.09 | −$4.61 |
| Priciest anywhere — Hong Kong | $16.70 | +$12.00 |