209,000 in Chad (2006). Population total all countries: 229,000.
Mayo-Kebbi Est Region, Kabbia and Mont d’Illi departments, Gounou Gaya, Fianga; Tandjilé Region, Tandjilé Ouest department, Kélo. Gounou Gaya is center. Also in Cameroon.
Kera [ker] and other nearby groups are bilingual in Musey.