, officially Estado Libre y Soberano de Sonora
, is one of 32 states which comprise the Federal Entities of Mexico. It is divided into 72 municipalities; the capital city is Hermosillo.
Sonora is bordered by the states of Chihuahua to the east, Baja California to the northwest and Sinaloa to the south. To the north, it shares the U.S.–Mexico border primarily with the state of Arizona with a small length with New Mexico, and on the west has a significant share of the coastline of the Gulf of California.