U.S. States Bordering Mexico
Four U.S. states share a land border with Mexico:
- California — 140 mi (225 km) border; crossings: San Ysidro (busiest land port in Western Hemisphere), Otay Mesa, Tecate, Calexico
- Arizona — 372 mi (599 km); crossings: Nogales, Douglas, Lukeville, Naco, Sasabe, San Luis
- New Mexico — 180 mi (290 km); crossings: Santa Teresa, Columbus, Antelope Wells
- Texas — 1,254 mi (2,018 km) — longest; crossings: El Paso, Laredo, Hidalgo, Brownsville, Eagle Pass, Del Rio, Presidio, Roma, Rio Grande City, Progreso, Los Ebanos (ferry)
📊 Total Border Length
1,954 miles (3,145 km) — defined by Rio Grande (TX) and surveyed lines (NM, AZ, CA).
🛂 Significance
- $1.5B+ daily bilateral trade
- Millions of legal crossings annually
- Migration, security, drug trafficking, water treaty (1944) flashpoints
- Border communities: deeply binational culturally/economically