The municipal area is 529.48 km2 with a population of 479 registered in 2000.

INEGI Most of this population lives in the small municipal seat.

Neighboring municipalities are Soyopa to the north, Yécora to the east, Suaqui Grande to the southwest, and San Javier to the west.

Ónavas is crossed by the Río Yaqui, which rises in Chihuahua and flows into the Pacific Ocean.

This article about a location in the Mexican state of Sonora is a stub.