There are four states that border Mexico: California, Arizona, New Mexico, and Texas. Mexico is the country to the south of the United States. All of the states that now border Mexico were once part of Mexico.

Does Texas share a border with Mexico?

Texas and Mexico share 1,254 miles of common border and are joined by 28 international bridges and border crossings.

What part of Mexico does Texas border?

Texas' longest river forms a natural border to the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas in the southwest. The Lone Star State (its nickname) borders the US state of New Mexico in the west; the Red River of the South defines its border with the US state of Oklahoma.