Where the numbers come from

The U.S. Energy Information Administration surveys diesel stations every Monday morning and posts the averages on Tuesday, or Wednesday after a Monday holiday. This is the DOE weekly diesel price. The government's EIA runs the survey. Fuel surcharge contracts use either the U.S. or a regional DOE price, so check which one yours uses. Work out a fuel surcharge from it.

EIA doesn't publish a diesel price for single states, except California. It reports regions instead, so every state in a region shows the same weekly price here. The regions are New England, Central Atlantic, Lower Atlantic, Midwest, Gulf Coast, Rocky Mountain, California, and the rest of the West Coast.

EIA leaves Alaska and Hawaii out of its survey, so those two states have no weekly price.

Charts go back to June 2022, when EIA changed how it collects the numbers.

• Not the price at one pump. It's an average of many stations, so the one down the road can be higher or lower.
• Not a price before tax. Federal and state taxes are in it. Dyed farm diesel is untaxed and usually costs less.
• Not your fleet card price. Card discounts and cost plus deals work off their own numbers, so what you pay will differ.

EIA's number comes out once a week. If you need something fresher, each state page links to AAA's daily average for that state.

Every state taxes diesel, and there is also a federal tax of 24.4 cents a gallon. Both are already in the pump price. Each state page shows the tax on a gallon there and where the state ranks.

Don't subtract the tax from a price here to get a price before tax. The tax table and the prices come from different sources and dates, and most prices are regional averages.

The rates come from the Federal Highway Administration, which collects them from the states once a year. This is FHWA's 2024 table. The newest rate in it took effect in October 2024, so a change after that isn't in yet. Many states change their rate every year, so check with the state before you count on a figure. Each state page says when its rate took effect.

This counts state taxes charged by the gallon. Sales taxes, local fuel taxes and some other state taxes on fuel aren't in it, so what you pay can be more.

FHWA's table has no diesel rate for the District of Columbia, so that page shows only the federal rate. That doesn't mean there's no tax on diesel there.

FHWA's rates for Minnesota and Utah are known to be out of date, so those pages say so and they aren't ranked.

The site checks for new numbers three times a day. EIA's weekly prices change on Tuesdays. If prices look older than usual, a note at the top of the page says so.

Tell us on GitHub (a free account is needed). Say which page and what looks off, and we'll check it against the source.

Weekly prices: U.S. Energy Information Administration, Gasoline and Diesel Fuel Update (released Oct 14, 2026). EIA data is public domain.

Diesel tax: Federal Highway Administration, Highway Statistics table MF-121T (2024 reporting period, published October 2025). FHWA data is a U.S. government work in the public domain.

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