| Bordering States | State |
| Ohio, Wisconsin | |
| Arkansas, Virginia | |
| Alabama, South Carolina | |
| Kentucky, Iowa | |
| Washington, Utah | |
| Oklahoma, Arizona | |
| Virginia, Delaware | |
| Utah, South Dakota | |
| Indiana, Pennsylvania | |
| Kansas, Tennessee | |
| | Bordering States | State |
| Rhode Island, Massachusetts | |
| North Carolina, Maryland | |
| Florida, Mississippi | |
| New Mexico, Missouri | |
| South Dakota, Kansas | |
| New Mexico, Idaho | |
| Oregon, Arizona | |
| Virginia, Illinois | |
| Louisiana, Missouri | |
| Iowa, Montana | |
|