4,530,000 (1994 census). 25,500,000 all Oromo speakers in Ethiopia (2007 census).
Oromiya Region, northern Bale, East Hararghe, and West Hararghe zones; Sumale State, Shinile zone, and southernmost Afar State; also in Dire Dawa and Hareri Hizb.
Latin script [Latn].
In Ethiopia, Oromo is viewed as 1 people who speak 1 language. Muslim.