EIA Weekly On-Highway Diesel Survey - week of October 26, 2026
Diesel cost per gallon in Illinois
What readers paid for diesel in Illinois
Prices readers report from the pump: what they paid, where, and how they paid. Each one is a single fill on the date shown, not a survey average; the weekly EIA figures elsewhere on this page are the survey.
No reader has reported a price in Illinois yet. Yours would be the first.
What did you pay for diesel?
Tell us the price at your last fill and see how it compares with the government survey for your state. Your report goes on this site as a dated reader report; we publish your state and the first three digits of your ZIP, nothing else.
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Read this as a district figure, not a state figure. The EIA weekly on-highway diesel survey prices the United States, its districts and California, and nothing else. It does not price Illinois. The number above is Midwest (PADD 2), series EMD_EPD2D_PTE_R20_DPG, and it is the closest published federal figure for Illinois. We do not estimate a price for Illinois from it. 5 of Illinois's neighbouring states sit in the same district and therefore show the same price below.
EIA does not publish a weekly on-highway diesel price for Illinois. The federal survey prices the district Illinois sits in, Midwest (PADD 2), at $6.480 per gallon in the week of October 26, 2026 (series EMD_EPD2D_PTE_R20_DPG), $0.13 above the US average of $6.352. Pump prices inside the district vary around that figure.
Diesel tax breakdown
Sales tax: 6.25% state sales tax, prepaid at 21c a gallon from 1 July to 31 December 2026; local sales taxes come on top.
The inflation increase due on 1 July 2026 was paused until 31 December 2026 (Public Act 104-0468).
Interstate trucks (IFTA): 73.8c a gallon for October to December 2026. IFTA's 73.8c adds an 18c sales tax equivalent to the 55.8c motor fuel tax.
55.8c from 1 July to 31 December 2026.
Checked 22 October 2026 against Illinois DOR bulletin FY 2026-23 (reissued 16 June 2026), Illinois DOR, Prepaid Sales Tax rates and Illinois EPA, Underground Storage Tank Fund. Local and county taxes are not included. The percentage is against the EIA figure shown above, which is a district figure unless Illinois is surveyed directly.
Neighbouring states
Neighbours in the same EIA district carry the same published figure. A matching price here means the federal survey shows no measured gap across that border, not that pumps are identical.
Off-road (dyed) diesel in Illinois
Red-dyed diesel is the same fuel as clear diesel, sold without highway fuel taxes for uses off the public road. How Illinois treats it, checked 25 October 2026. Rules for every state are on the off-road diesel guide.
Sources: Illinois DOR, Dyed Diesel Requirements; Illinois DOR, PIO-71 Dyed Diesel Fuel Enforcement Program; Illinois DOR letter ruling ST 20-0007-PLR. This is a summary, not legal or tax advice.
What shapes the diesel price in Illinois
Illinois carries one of the highest effective diesel tax burdens in the Midwest once the state excise and underground storage tank fee are combined, which is why Chicago-area pump prices typically run above neighbouring Iowa despite both sitting in the same EIA district. Chicago is a major freight hub for both east-west and north-south corridors, and the Chicago terminal complex is one of the largest fuel distribution hubs in the country.
The trip calculator starts at $6.48/gal, the EIA figure above. Change it to the price you actually see at the pump for a real answer.