List of municipalities and counties on the Mexico–United States border explained

This is a list of all counties and municipalities (municipios in Spanish) that are directly on the Mexico–United States border. A total of 37 municipalities and 23 counties, spread across 6 Mexican and 4 American states, are located on the border. All entities are listed geographically from west to east.

Mexico

Baja California

Sonora

Chihuahua

Coahuila

Nuevo León

Tamaulipas

United States

California

Arizona

New Mexico

Texas

See also