Sonora, officially Estado Libre y Soberano de Sonora, is one of the 31 states which, along with Mexico City, comprise the Federal Entities of Mexico. The state is divided into 72 municipalities; the capital city of which being Hermosillo, located in the center of the state. Other large cities include Ciudad Obregón, Nogales, San Luis Río Colorado, and Navojoa.

Heroica Nogales, more commonly known as Nogales, is a city and the county seat of the Municipality of Nogales in the Mexican state of Sonora. It is located in the north of the state across the U.S.-Mexico border, and is abutted on its north by the city of Nogales, Arizona.