87,000 (2005 SIL). Based on the actual population of the subdivision where the Oku people are present, as of the official 2005 census (2014 C. Hamm).
North West region: Bui division, west Jakiri subdivision, Mt. Oku and Lake Oku areas.
Latin script [Latn].
Distinct from Kuo [xuo] which is Adamawa.