4,530,000 (1994). 25,500,000 all Oromo speakers in Ethiopia (2007 census).
Afar region: south; Dire Dawa and Harari regions; Oromia region: north Bale, east Hararghe, and west Hararghe zones; Somali region: Shinile zone.
SOV; postpositions; gender (masculine/feminine); case-marking (7 cases); verb affixes mark person, number, gender of subject; passives (active, middle, passive); tense and aspect; 25 consonant and 10 vowel phonemes; pitch accent.
Latin script [Latn].
In Ethiopia, Oromo is viewed as one people who speak one language. Muslim.