68,400 (1999 census). Ethnic population: 75,000 (2009 census).
North Nghe An Province, highland areas. Cuoi Cham dialect: Tan Ky district, Tan Hop commune.
Cuoi Cham (Uy Lo), Mon.
Tho is an official ethnic community. Associated culturally with other principal local ethnonyms Keo, Mon, Cuoi, Ho, Dan, Lai-Ly Ha, and Tay Poong.