L1 users: 7,000 (Van Driem 2007).
Chhattisgarh state: Raigarh district, Jashpur area; Jharkhand state: Gumla, Lohardaga, southern Palamau, and northern Ranchi districts of Chotanagpur Plateau; Maharashtra state; Odisha state: Sambalpur district; West Bengal state.
Brijia (Birjia, Koranti), Manjhi.
Devanagari script [Deva].
Asur and Birjia are Scheduled Tribes. Hindu, Christian, traditional religion.