| State | Number of Listed Places |
|---|---|
| Alabama | 1 |
| Alaska | 1 |
| Arizona | none |
| Arkansas | 11 |
| California | 18 |
| Colorado | 2 |
| Connecticut | 1 |
| Delaware | 3 |
| Washington, D.C. | 46 |
| Florida | 3 |
| Georgia | 13 |
| Hawaii | 4 |
| Idaho | none |
| Illinois | 35 |
| Indiana | 13 |
| Iowa | 12 |
| Kansas | 4 |
| Kentucky | 13 |
| Louisiana | none |
| Maine | 3 |
| Maryland | 6 |
| Massachusetts | 21 |
| Michigan | 5 |
| Minnesota | none |
| Mississippi | 1 |
| Missouri | 20 |
| Montana | none |
| Nebraska | 8 |
| Nevada | none |
| New Hampshire | 6 |
| New Jersey | 4 |
| New Mexico | none |
| New York | 41 |
| North Carolina | 9 |
| North Dakota | 11 |
| Ohio | 32 |
| Oklahoma | none |
| Oregon | 3 |
| Pennsylvania | 15 |
| Rhode Island | none |
| South Carolina | 4 |
| South Dakota | 2 |
| Tennessee | 15 |
| Texas | 32 |
| Utah | 2 |
| Vermont | 7 |
| Virginia | 47 |
| Washington | 1 |
| West Virginia | none |
| Wisconsin | none |
| Wyoming | 1 |
| Outside the U.S. | 13 |