600,000 (1991 UBS).
Kogi state: Olamabolo and Ankpa LGAs; Benue state: Ogbadibo and Okpokwu LGAs; Enugu state: Igbo-Eze North, Udenu, and Isi-Uze LGAs.
5 (Developing). De facto language of provincial identity in Kogi, Benue, and Enugu states, primary education, radio and TV media.
Idoma Central (Akpoto, Oturkpo), Idoma West, Idoma South (Igumale, Igwaale, Ijigbam), Okpogu. Dialect subgroup.
Latin script [Latn], used since 1979.