Texas is the second most populous (after California) and the second largest of the 50 U.S. states (after Alaska) in the United States of America. Geographically located in the south central part of the country, Texas shares an international border with the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas to the south and borders the U.S. states of New Mexico to the west, Oklahoma to the north, Arkansas to the northeast, and Louisiana to the east.