San Diego County and Imperial County are the California counties that border Mexico.
The states that border Mexico are California, Arizona, New Mexico and Texas...
California borders Mexico.
Mexico cession
Zero. Mexico and California share a border.
Nothing. California borders Mexico.
Texas, California, New Mexico and Arizona all border Mexico.
California's southern border is shared with the country of Mexico.
California was acquired from Mexico at the end of the Mexican-American War (1846-1848). Since then, southern California has been part of the US-Mexico Border.
Mexico
Catron County on the Arizona border.
California, Arizona, New Mexico, and Texas border Mexico. Texas, Louisiana, Mississippi, Alabama, and Florida border the Gulf of Mexico.