4,000 in Central African Republic (1996). Population total all countries: 13,000.
Vakaga Prefecture, Ouanda-Djallé subprefecture; Haute-Kotto Prefecture, Ouadda subprefecture. Also in Democratic Republic of the Congo, South Sudan, Sudan.
Binga, Yulu. Aja is not a dialect of Yulu, but of Kresh [krs] (1987 R. Brown).
Also use Kresh [krs].