Illinois Gas Prices
Weekly average gasoline price for Illinois — EIA retail survey data.
Current Illinois Gas Price
Illinois Average
$3.780/gal
Week ending Monday, July 20, 2026
EIA does not publish a direct weekly series for Illinois. Showing PADD 2 (Midwest) regional average.
vs last year: +$0.794 (+26.6%)
National average
$4.001
vs national
-$0.221
National rank
#8 of 51
Weekly retail gasoline survey data from U.S. Energy Information Administration (EIA) (eia.gov). Updated 7/22/2026, 12:46:51 PM ET. Not live pump prices — always check your local station for current prices.
Illinois Gas Taxes
State gas tax
66¢/gal
With federal (18.4¢)
84.4¢/gal
vs. state average
+32.3¢
Illinois drivers pay about 66¢ per gallon in state gasoline taxes, above the 33.7¢ average across the 50 states and D.C. Figures are approximate (as of 2025) and exclude local sales taxes; verify current rates with your state revenue department.
Other States
See the latest weekly average gasoline price in Illinois, how it compares with the national average, and what has been moving prices. Illinois often posts a high weekly average for a Midwest state because of one of the nation's steepest fuel tax burdens.
Chicago-area blend rules and high taxes keep Illinois elevated versus Iowa or Missouri even when crude falls. This page shows the latest weekly average, trend, and tax math.
Current Illinois Gas Price
This page shows the latest EIA weekly average retail price for regular gasoline in Illinois, with the survey week ending date and recent trend. It is a statewide (or best available regional) survey average — not a live price at a specific station.
Illinois Gas Taxes
Illinois drivers pay about 66¢ per gallon in state gasoline taxes (roughly 84.4¢ with the 18.4¢ federal tax) — 32.3¢ above the 33.7¢ average across the 50 states and D.C. (approx., as of 2025).
Why Illinois Prices Move
Illinois has strong refining access yet still prices like a high-tax state. Seasonal blend changes in the Chicago area and tax policy dominate the structural premium over nearby Midwestern peers.
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Illinois Gas Prices — Frequently Asked Questions
- What is the average gas price in Illinois?
- The EIA publishes a weekly average retail price for regular gasoline, typically each Monday for the prior week. This page lists the current Illinois weekly average with its survey date and trend. It is a survey average, not a live pump price.
- What is the gas tax in Illinois?
- Illinois drivers pay about 66¢ per gallon in state gasoline taxes (roughly 84.4¢ with the 18.4¢ federal tax) — 32.3¢ above the 33.7¢ average across the 50 states and D.C. (approx., as of 2025).
- Are these live pump prices in Illinois?
- No. These are EIA weekly survey averages for Illinois, not real-time prices at individual gas stations. Check local stations or a pump-price app for the current street price.
- Why is gas expensive (or cheap) in Illinois?
- Illinois gas is frequently expensive relative to neighboring Midwest states mainly because of a high state gasoline tax (about 66¢/gal as of 2025, before federal tax) and metro reformulated-fuel requirements.