Click on a state to see a list of Superfund sites by County/Town.
| State | No. of sites |
| Alabama | 186 |
| Alaska | 144 |
| Arizona | 178 |
| Arkansas | 61 |
| California | 781 |
| Colorado | 209 |
| Connecticut | 442 |
| Delaware | 63 |
| District of Columbia | 25 |
| Florida | 525 |
| Georgia | 306 |
| Hawaii | 78 |
| Idaho | 65 |
| Illinois | 365 |
| Indiana | 182 |
| Iowa | 219 |
| Kansas | 239 |
| Kentucky | 132 |
| Louisana | 121 |
| Maine | 61 |
| Maryland | 143 |
| Massachusetts | 505 |
| Michigan | 241 |
| Minnesota | 87 |
| Mississippi | 55 |
| Missouri | 427 |
| Montana | 66 |
| Nebraska | 199 |
| Nevada | 31 |
| New Hampshire | 93 |
| New Jersey | 611 |
| New Mexico | 89 |
| New York | 530 |
| North Carolina | 250 |
| North Dakota | 19 |
| Ohia | 240 |
| Oklahoma | 143 |
| Oregon | 82 |
| Pennsylvania | 540 |
| Rhode Island | 191 |
| South Carolina | 192 |
| South Dakota | 39 |
| Tennessee | 272 |
| Texas | 252 |
| Utah | 180 |
| Vermont | 67 |
| Virginia | 227 |
| Washington | 200 |
| West Virgina | 101 |
| Wisconsin | 130 |
| Wyoming | 30 |