International border states of the United States
The international border states are those states in the U.S. that border either Canada, Mexico, Cuba, or Russia. With a total of eighteen of such states, thirteen lie on the U.S.–Canada border, four on the U.S.–Mexico border, and one consists of a maritime borders with Cuba and The Bahamas.
States along U.S.–Canada
Thirteen states lie on the U.S.–Canada border. The U.S. states of Indiana, Illinois, and Wisconsin do not share a direct geographic border with Canada. They do, however, possess customs facilities due to their place along the Great Lakes, which leads to the Canadian border..| State | Adjacent Province/Territory | Length of Border | Description of border |
| Alaska | BC and YT | 1,538 mi | |
| Michigan | ON | 721 mi | water boundary |
| Maine | NB, NS, and QC | 611 mi | water boundary with Nova Scotia |
| Minnesota | MB and ON | 547 mi | |
| Montana | AB, BC, and SK | 545 mi | |
| New York | ON and QC | 445 mi | |
| Washington | BC | 427 mi | |
| North Dakota | MB and SK | 310 mi | |
| Ohio | ON | 146 mi | On Lake Erie |
| Vermont | QC | 90 mi | |
| New Hampshire | QC | 58 mi | |
| Idaho | BC | 45 mi | |
| Pennsylvania | ON | 42 mi | On Lake Erie |
Other U.S. border states
Four states lie on the U.S.–Mexico border, while the U.S. state of Florida shares a water boundary with Cuba and The Bahamas; Alaska shares a water boundary with Russia.| State | Length of Border | Bordering Country |
| Alaska | 1,538 mi | Russia |
| Texas | 1,241 mi | Mexico |
| Arizona | 373 mi | Mexico |
| New Mexico | 180 mi | Mexico |
| California | 140 mi | Mexico |
| Florida | Cuba and The Bahamas |