3,630,000 in Ethiopia. 25,500,000 all Oromo speakers in Ethiopia (2007 census). Population total all countries: 3,949,400.
South Oromiya Region. Also in Kenya (Borana), Somalia.
Harari [har] is closely related.
In Ethiopia, Oromo is viewed as 1 people who speak 1 language. Called Borana in Kenya where Gabra and Sakuye dialects may have significant dialect and language attitude differences from Borana dialect. Muslim, traditional religion.