I found this on californiagasprices.com. California is the highest. Alaska is the lowest.
“After crude oil costs, taxes are the second largest contributor to the price paid at the pump. Together Federal and State excise taxes on fuel account for an average cost of approximately 62 cents per gallon. Rates include Federal excise taxes 18.4 cpg for gasoline and 24.4 cpg for diesel. cpg = cents per gallon”
| State | Gasoline | Diesel |
| Alabama | 38.6 | 45.6 |
| Alaska | 26.4 | 32.4 |
| Arizona | 37.4 | 52.4 |
| Arkansas | 40.2 | 47.2 |
| California | 63.9 | 72.0 |
| Colorado | 40.4 | 44.9 |
| Connecticut | 62.5 | 61.4 |
| Delaware | 41.4 | 46.4 |
| Dist. of Columbia | 38.4 | 44.4 |
| Florida | 51.6 | 53.4 |
| Georgia | 44.4 | 52.6 |
| Hawaii | 51.0 | 71.1 |
| Idaho | 43.4 | 49.4 |
| Illinois | 57.9 | 65.7 |
| Indiana | 50.1 | 69.2 |
| Iowa | 40.1 | 47.9 |
| Kansas | 43.4 | 51.4 |
| Kentucky | 36.9 | 39.9 |
| Louisiana | 38.4 | 44.4 |
| Maine | 47.5 | 53.9 |
| Maryland | 41.9 | 48.7 |
| Massachusetts | 41.9 | 47.9 |
| Michigan | 54.4 | 60.3 |
| Minnesota | 40.4 | 46.4 |
| Mississippi | 37.2 | 43.2 |
| Missouri | 36.0 | 42.0 |
| Montana | 46.2 | 53.0 |
| Nebraska | 42.3 | 47.7 |
| Nevada | 50.9 | 53.0 |
| New Hampshire | 38.0 | 44.0 |
| New Jersey | 32.9 | 41.9 |
| New Mexico | 36.4 | 43.4 |
| New York | 59.6 | 64.7 |
| North Carolina | 48.6 | 54.6 |
| North Dakota | 41.4 | 47.4 |
| Ohio | 46.4 | 52.4 |
| Oklahoma | 35.4 | 38.4 |
| Oregon | 43.4 | 48.7 |
| Pennsylvania | 50.7 | 63.6 |
| Rhode Island | 49.4 | 55.4 |
| South Carolina | 35.2 | 41.2 |
| South Dakota | 42.4 | 48.4 |
| Tennessee | 39.8 | 42.8 |
| Texas | 38.4 | 44.4 |
| Utah | 42.9 | 48.9 |
| Vermont | 38.4 | 50.4 |
| Virginia | 38.0 | 44.0 |
| Washington | 54.4 | 60.4 |
| West Virginia | 49.9 | 55.9 |
| Wisconsin | 51.3 | 57.3 |
| Wyoming | 32.4 | 38.4 |