Illinois · EIA survey Nov 9, 2026
Illinois gas and diesel prices
Regular gasoline $3.868 and diesel $6.201 a gallon this week, including taxes. Illinois is in EIA's Midwest (PADD 2) region; EIA publishes that region's average rather than a separate Illinois figure.
Price history
Illinois vs. its region and the U.S.
| Area | Diesel | Regular | Premium |
|---|---|---|---|
| Midwest (PADD 2) | $6.201 | $3.868 | $4.986 |
| United States | $6.127 | $3.995 | $5.013 |
| Chicago city | — | $4.461 | $5.729 |
Other states in Midwest (PADD 2)
Home heating fuels in Illinois
EIA collects residential heating oil and propane prices weekly from October through March (monthly in summer). Regional averages are labeled.
Illinois fuel taxes
| Gasoline | Diesel | |
|---|---|---|
| State taxes and fees | 70.4¢ | 77.9¢ |
| Federal excise | 18.4¢ | 24.4¢ |
| Total per gallon | 88.8¢ | $1.023 |
| Share of this week’s price | 23% | 16% |
| Rank (1 = highest state tax) | 2 of 51 | 2 of 51 |
State rates: Tax Foundation, July 2026 (state statutes); excludes some local and gross-receipts taxes. Share uses the regional average price. All states.
Driving electric in Illinois
At Illinois’s average residential rate, home charging costs 60% less per mile than gasoline. Public fast charging usually costs more. Run your own numbers.
Quick answers
What is the average price of gas in Illinois?
$3.868 a gallon for regular in EIA's survey of November 9, 2026, the average for EIA's Midwest (PADD 2) region, which includes Illinois.
What is the price of diesel in Illinois?
$6.201 a gallon in EIA's survey of November 9, 2026 (Midwest (PADD 2) regional average; EIA does not publish a weekly diesel price for Illinois alone).
Is fuel in Illinois cheaper than the national average?
Diesel is 7.4¢ above the U.S. average, and regular gasoline 12.7¢ below.
What is the gas tax in Illinois?
70.4¢ a gallon in state taxes on gasoline and 77.9¢ on diesel (Tax Foundation, July 2026), plus the federal 18.4¢ and 24.4¢: 88.8¢ and $1.023 in total.
What does propane cost in Illinois?
$2.007 a gallon for residential propane in EIA’s survey of November 9, 2026, up 1.2¢ on the week.
Is it cheaper to drive electric in Illinois?
At 19.32¢ per kWh (EIA residential average) an EV getting 3.5 miles per kWh spends about $5.52 per 100 miles on home charging, against $13.81 for a 28-mpg car at $3.868 gas.
Plan a trip or fleet budget with Illinois prices: trip fuel cost · fleet budget. Source: EIA Gasoline and Diesel Fuel Update.