Coahuila (Spanish pronunciation: [koaˈwila] , formally Coahuila de Zaragoza (American Spanish: [koaˈwila ðe saɾaˈɣosa] , officially the Free and Sovereign State of Coahuila de Zaragoza (Spanish: Estado Libre y Soberano de Coahuila de Zaragoza), is one of the 32 states of Mexico.
Coahuila borders the Mexican states of Nuevo León to the east, Zacatecas to the south, and Durango and Chihuahua to the west. To the north, Coahuila accounts for a 512 kilometres (318 mi) stretch of the Mexico–United States border, adjacent to the U.S. state of Texas along the course of the Rio Grande (Río Bravo del Norte). With an area of 151,563 square kilometres (58,519 sq mi), it is the nation’s third-largest state. It comprises 38 municipalities (municipios). In 2010, Coahuila’s population is 2,748,391 inhabitants.
The largest city and State Capital is the city of Saltillo; the second largest is Torreón (largest metropolitan area in Coahuila and 9th largest in Mexico); the third largest is Monclova (a former state capital); the fourth largest is Ciudad Acuña; and the fifth largest is Piedras Negras.
In 1840 Coahuila briefly became a member of the short lived Republic of the Rio Grande.
During the Mexican Revolution, Francisco Villa attacked the city of Torreón.
The name Coahuila derives from native terms for the region, and has been known by variations such as Cuagüila and Cuauila. Some historians believe that this means “flying serpent”, “place of many trees”, or “place where serpents creep”. The official name of the state is Coahuila de Zaragoza, in honor of General Ignacio Zaragoza.
