250,000 (2000 SIL). 75,000 monolinguals. Total users in all countries: 250,290.
Bas-Uele province: Bondo territory; Nord-Ubangi province: Businga, Mobayi-Mbongo, and Yakoma territories.
2 dialects, about equal in size. Sango [sag] is derived from Ngbandi.
Latin script [Latn].
Ethnic groups: Abasango, Bwato, Mbaati, and Nzomboy (Monjomboli). Christian.