420,000 (2001 census).
Assam, Karbi Anglong district, Mikir and Rengma hills, Nagaon, Darrang, Marigaon, Sonitpur, Lakhimpur, and North Cachar districts; Arunachal Pradesh, Papumpare district, Balijan circle; Meghalaya, Jaintia district; Nagaland, foothills around Dimapur.
Chingthang (Jynthong), Mirlong, Rong Kethang (Rengkhang, Rongkhang). Lexical similarity: 82%–96% between dialects.
Other groups speak Karbi as L1, including some Dimasa. All also use Assamese [asm].
A Scheduled Tribe. Hindu, traditional religion, Christian.