Diesel and Gas Prices by State: What Fuel Costs Trade Businesses (2026)

Original research · U.S. Energy Information Administration weekly fuel prices · Updated September 30, 2026

Data through: the EIA survey for the week of September 28, 2026 (released Sep 29, 2026). Next EIA release: Oct 6, 2026.

Diesel eased off its record high. The U.S. average for on-highway diesel was $6.38 a gallon the week of Sep 28, 2026, down from the $6.53 record set the week of Sep 21, 2026. EIA’s weekly records go back to 1994. Diesel is still 9.8% above the June 2022 peak of $5.81. Regular gas was $4.46. Diesel is up $2.63 from a year ago, and gas is up $1.35. At this week’s price, one diesel work truck driven 25,000 miles a year would burn about $13,296 in fuel, compared with $6,847 at 2021 prices.

Key findings

• Diesel is $0.15 below its record. $6.38 a gallon for the U.S. the week of Sep 28, 2026, down from last week’s record of $6.53 and up from $3.75 a year earlier. Before 2026, the high was $5.81 on June 20, 2022. These prices are not adjusted for inflation.
• Most of the jump came this summer. Diesel was $5.35 on June 1, 2026. It rose $1.03 (19.3%) in under four months. The 2026 low was $3.46 in January.
• Diesel costs $1.92 more than gas right now. In 2021 the gap averaged $0.28. Diesel trucks are taking the bigger hit.
• California pays the most. The Lower Atlantic pays the least. California diesel was $8.18. Among the seven main EIA regions, the West Coast was highest at $7.36 and the Lower Atlantic (Florida to West Virginia) lowest at $5.95. The Midwest ($6.53) is now above the national average.
• A year of fuel for one work truck is about $6,448 higher than at 2021 prices. That’s for our example diesel truck (25,000 miles, 12 mpg) at the U.S. price. For a gas pickup (20,000 miles, 15 mpg) the gap is $1,943. For a long-haul semi, it’s $47,619.
• EIA does not publish a diesel price for each state. It publishes diesel only for regions (the East Coast and its three parts, the Midwest, Gulf Coast, Rocky Mountain states and West Coast) and for California. It publishes regular gas for 9 states and 10 cities. For the other states, the table below shows the price for the region the state belongs to. We did not make up state prices.

Diesel and gas prices since 2021

Prices climbed in 2021 and spiked in 2022. Diesel peaked at $5.81 and gas at $5.01 in June 2022. Both then fell for three years. Diesel averaged $3.66 in 2025, and gas averaged $3.10.

2026 is different. Diesel has averaged $5.01 so far this year and gas $3.82. Gas is still below its 2022 record. Diesel is not.

Dollars per gallon, including taxes. PADD = the regions EIA uses for fuel data. “West Coast except California” is the diesel price EIA publishes for Alaska, Arizona, Hawaii, Nevada, Oregon and Washington together.

Diesel prices by region

Every region is up at least $2.28 a gallon from a year ago. Only California rose more than the Midwest, which is up $2.79. A gallon of diesel in California costs $2.23 more than on the Gulf Coast.

What a year of fuel costs one trade truck

Prices won’t stay at one week’s level for a year. Over the past 52 weeks, diesel averaged $4.68 for the U.S. At that price, the same diesel truck used $9,755 of fuel and the gas pickup used $4,820. The full numbers for every region are in the CSV.

If you run three diesel crew trucks, multiply by three. A $1.00 rise in diesel adds about $2,083 a year to each of our example diesel trucks.

Diesel and gas prices for every state

Here’s how to read this table. EIA surveys fuel prices by region. For diesel, it publishes a price for each region and for California. For regular gas, it also publishes 9 states: California $6.19, Washington $5.45, New York $4.41, Massachusetts $4.32, Minnesota $4.32, Florida $4.28, Ohio $4.26, Colorado $4.09, Texas $3.84. Every other state shows its region’s price, marked “region.” Two neighbors in the same region will show the same number, even though real pump prices differ.

*At this week’s price, using the example assumptions above. “state” = EIA publishes a price for that state. “region” = the price for the state’s EIA region. For diesel, Alaska, Arizona, Hawaii, Nevada, Oregon and Washington use EIA’s “West Coast except California” price.

Download the data (CSV)

What this means for trade businesses

Nevada service territories. A wider service radius adds fuel, unbilled driving and potential return visits to each estimate. Our guide to starting an electrical business in Nevada combines that cash planning with C-2 licensing, contract limits, bonds and residential payment rules.

Electrical service businesses. Count supply-house trips, return visits and travel between customers when budgeting a service van. Our guide to starting an electrical business in Arizona connects that operating budget with contractor licensing, bonds, insurance and job pricing.

• Landscaping. Crews drive every day and tow trailers, so fuel is a real line on every job. Mowers and blowers burn gas too. If you price by the job, check that your quote still covers fuel. Our landscaping job pricing calculator has a line for it. For the size of the industry in your state, see landscaping industry statistics.
• HVAC and plumbing. Service vans run all day between calls. Our example gas pickup costs $5,953 a year at this week’s U.S. price. A trip charge or a line on maintenance agreements can help cover it. For state numbers on the trade, see HVAC industry statistics.
• Contractors. Heavy-duty diesel pickups, dump trucks and equipment all feel the diesel price first. If you bid jobs weeks ahead, the price can move a lot before you start. It went up $1.03 a gallon since June 1.
• Trucking. A long-haul semi burns about 15,385 gallons a year in our example. At this week’s price that’s $98,185. Many freight contracts use a fuel surcharge tied to EIA’s weekly diesel price, and this is the number they use.

For weekly fleet fuel bills by business type, see our fuel costs for mobile service businesses page.

Fuel isn’t the only energy cost going up. Business electricity prices rose in most states this year. See where business electricity costs rose the most.

Methods and sources

• Data. EIA weekly retail prices from the EIA Open Data API v2, route petroleum/pri/gnd. Regular gasoline (all formulations) and on-highway No. 2 diesel, every week from January 4, 2021 to September 28, 2026. We pulled 300 weeks for every area EIA publishes. Full U.S. history (gas since 1990, diesel since 1994) was used for the record check. Pulled September 30, 2026.
• States and regions. EIA groups states into PADD regions (see EIA’s map of states in each region). We matched each state to its region. We used a state’s own price only where EIA publishes one.
• Averages. Yearly averages are simple averages of the weekly prices. “A year ago” is the week of Sep 29, 2025.
• Truck costs. Gallons (miles ÷ mpg) × price. The miles and mpg are our examples, not measured costs. They leave out idling, equipment and generators.
• Not adjusted for inflation. The record is a record in current dollars only. We did not adjust any price for inflation.

Caveats

• A region’s price is an average. Real prices vary by town, station and brand. Truck stops and fleet cards may price differently.
• Prices include federal and state taxes. State gas taxes vary, so some states in a region are above or below the region’s average.
• City prices cover the counties EIA lists for each metro area, not just the city.
• One week is a snapshot. EIA updates every week, usually on Monday. We’ll refresh this page.

This page has no ads or affiliate links for fuel cards. All prices are public EIA data. EIA is a U.S. government agency, and its data is public domain.

FAQ