15,000 in Cameroon (Tourneux 2004), increasing. 40,000 all Kotoko languages (Tourneux 2004). Majority in Cameroon (2005 S. Allison).
Far North Region, Logone and Chari divisions, north of Waza National Park, Logone-Birni subdivision, Logone river bank across to Nigeria border. Also in Chad.
The term Mandage is used by the Kotoko to refer to either the northern group of Kotoko languages (Mpade, Afade, Maslam, Malgbe) or the Kotoko group as a whole (including Mser and Lagwan). Muslim.