2,660 in Viet Nam (1999 census). Population total all countries: 3,165. Ethnic population: 3,700 (2009 census).
Lai Chau Province, Muong Te and Sin Ho districts, triangle-shaped area between Song Da (Black River) and the Nam Na: Nam Nghe, Nam Xung, Nam Ban, Ban Nam Voi, and others.
M ang is an official ethnic community. Traditional religion.