241,000 (2009 census), increasing.
Western Province, Bungoma county, Mount Elgon and Cheptais districts; Rift Valley Province, Trans-Nzoia county, Trans-Nzoia and Kwanza districts.
Bong’omeek (Bong’om, Pong’om), Book (Bok, Pok), Koony (Kony), Mosoop, Sabiiny, Soomeek. Related to Kupsapiiny [kpz] of Uganda.
Example of language revitalization. Christian, traditional religion.