Ónavas is a municipality in the state of Sonora in northwestern Mexico, being the least populous municipality in Sonora.
The municipal seat is at Ónavas.
Area and population
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. It is located at an elevation of 180 meters. The municipal population has been decreasing since 1980 when it was 586. ==Neighboring municipalities==