The Akimel O'odham, also called the Pima, are a group of Native Americans living in an area consisting of what is now central and southern Arizona, as well as northwestern Mexico in the states of Sonora and Chihuahua. The majority population of the two current bands of the Akimel O'odham in the United States are based in two reservations: the Keli Akimel Oʼodham on the Gila River Indian Community (GRIC) and the On'k Akimel O'odham on the Salt River Pima-Maricopa Indian Community (SRPMIC).

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.