Diesel prices by state
The U.S. average is $6.53 a gallon for the week of 21 September 2026, and the spread across the country is $2.11 — $316.05 on a 150-gallon fill, for the same fuel.
A year of it
The national average was $3.75 in the week of 2025-09-29 and is $6.53 now — $2.77 more a gallon, or $416 on every 150-gallon fill.
By region
The EIA publishes a national figure, nine regional ones and California separately. Sorted cheapest first.
| Region | Per gallon | On the week | vs national | 150-gal fill |
|---|---|---|---|---|
| Lower Atlantic | $6.14 | 4.3¢ up | 39.0¢ below | $921 |
| Gulf Coast | $6.18 | 15.0¢ up | 35.2¢ below | $927 |
| Rocky Mountain | $6.34 | 27.4¢ up | 18.9¢ below | $951 |
| New England | $6.52 | 31.5¢ up | 1.2¢ below | $978 |
| Central Atlantic | $6.55 | 23.4¢ up | 1.7¢ above | $982 |
| Midwest | $6.68 | 43.0¢ up | 15.1¢ above | $1,002 |
| West Coast (ex. CA) | $6.79 | 22.5¢ up | 26.2¢ above | $1,019 |
| California | $8.25 | 20.7¢ up | $1.72 above | $1,237 |
By state
Each state page shows the published regional average that covers it, the week's change, a 12-week trend, what a tank costs and how its neighbours compare.
| State | EIA region | Per gallon |
|---|---|---|
| Alabama | Gulf Coast | $6.18 |
| Alaska | West Coast (ex. CA) | $6.79 |
| Arizona | West Coast (ex. CA) | $6.79 |
| Arkansas | Gulf Coast | $6.18 |
| California | California | $8.25 |
| Colorado | Rocky Mountain | $6.34 |
| Connecticut | New England | $6.52 |
| Delaware | Central Atlantic | $6.55 |
| District of Columbia | Central Atlantic | $6.55 |
| Florida | Lower Atlantic | $6.14 |
| Georgia | Lower Atlantic | $6.14 |
| Hawaii | West Coast (ex. CA) | $6.79 |
| Idaho | Rocky Mountain | $6.34 |
| Illinois | Midwest | $6.68 |
| Indiana | Midwest | $6.68 |
| Iowa | Midwest | $6.68 |
| Kansas | Midwest | $6.68 |
| Kentucky | Midwest | $6.68 |
| Louisiana | Gulf Coast | $6.18 |
| Maine | New England | $6.52 |
| Maryland | Central Atlantic | $6.55 |
| Massachusetts | New England | $6.52 |
| Michigan | Midwest | $6.68 |
| Minnesota | Midwest | $6.68 |
| Mississippi | Gulf Coast | $6.18 |
| Missouri | Midwest | $6.68 |
| Montana | Rocky Mountain | $6.34 |
| Nebraska | Midwest | $6.68 |
| Nevada | West Coast (ex. CA) | $6.79 |
| New Hampshire | New England | $6.52 |
| New Jersey | Central Atlantic | $6.55 |
| New Mexico | Gulf Coast | $6.18 |
| New York | Central Atlantic | $6.55 |
| North Carolina | Lower Atlantic | $6.14 |
| North Dakota | Midwest | $6.68 |
| Ohio | Midwest | $6.68 |
| Oklahoma | Midwest | $6.68 |
| Oregon | West Coast (ex. CA) | $6.79 |
| Pennsylvania | Central Atlantic | $6.55 |
| Rhode Island | New England | $6.52 |
| South Carolina | Lower Atlantic | $6.14 |
| South Dakota | Midwest | $6.68 |
| Tennessee | Midwest | $6.68 |
| Texas | Gulf Coast | $6.18 |
| Utah | Rocky Mountain | $6.34 |
| Vermont | New England | $6.52 |
| Virginia | Lower Atlantic | $6.14 |
| Washington | West Coast (ex. CA) | $6.79 |
| West Virginia | Lower Atlantic | $6.14 |
| Wisconsin | Midwest | $6.68 |
| Wyoming | Rocky Mountain | $6.34 |
Questions
What is the average diesel price right now?
$6.53 a gallon nationally, for the week of 21 September 2026 — the EIA's weekly retail on-highway survey. Regional averages run from $6.14 in the Lower Atlantic to $8.25 in California.
Why don't you show a price for each state?
Because the EIA does not publish one. It surveys nationally, by region, and for California separately — so a state page here shows the regional average that officially covers that state, and says which region it is. Sites quoting a precise weekly figure for all fifty states are estimating at least forty-nine of them.
How often do diesel prices update?
The EIA surveys on Monday and publishes on Tuesday afternoon, so the official figure moves once a week. These pages read the latest one every time they load.
Why is California so much more expensive?
A different fuel specification, the highest state fuel taxes in the country and carbon programmes the other states do not have. It runs $1.72 a gallon above the national average this week, which is why the EIA gives it its own series.
Does buying in a cheap state save tax?
No — fuel tax follows the miles you run, not where you bought the fuel, and IFTA settles the difference every quarter. What you save buying in a cheap region is the base price of the diesel, which is real. How IFTA squares it up is here.