280,000 in Viet Nam (2002). Population total all countries: 495,000.
North, mainly along Red and Black rivers, Lai Chau, Dien Bien, Lao Cai, and Son La provinces; some in the south, Lam Dòng Province, Tung Nghia.
Positive attitudes. Those with prolonged contact with Tai Dam [blt] have become bilingual in it. Many have not had that contact.
Part of the Thái official ethnic community (1,550,423, 2009 census). Traditional religion, Buddhist.