L1 users: 1,830 (2000 USCWM). No monolinguals.
Uttarakhand state: Pithoragarh district, Darchula and Munsyari sub-districts, Chilla, Gala, Monggong, Panggu, Rimzhim, Rongto, Rung, Sirdang, Sirkha, Song, Sosa, Syang Khola, Tangkul, Waiku, and Zipti villages; Patti Chaudangs, Kali river west bank facing Nepal border along Mahakali valley.
Ranglo or Rang often used as a cover term for Byangs, Chaudangs, Darmiya, and Rongpo. Hindu, traditional religion.