L1 users: 10,000 (1989).
Sumatra, Jambi province: Sarolangun and Batang Hari regencies, 2 enclaves, eastern swamp region; Sumatera Selatan province: Musi Banyuasin regency.
For Kubu living in settled villages, L1 already replaced in all domains outside the home; for Kubu in Jambi areas (more isolated and less sedentary), the vitality is higher. Home. All ages. Positive attitudes. Also use Indonesian [ind], for education, religion, civic domains, and with other ethnic groups.
Territory rapidly shrinking, somewhat due to deforestation. Traditional religion, Muslim.