1,630,000 in Viet Nam (2009 census).
Central and northeast, near China border, Cao Bàng, Lang Son, Hà Giang, Tuye Quang, Bác Thái, Quang Ninh, Hà Bac, and Lam Dòng provinces; south in Tung Nghia and Song Mao. Possibly in Laos. Also in France, United States.
Central Tày, Eastern Tày, Northern Tày, Southern Tày, Tày Bao Lac, Tày Trung Khanh, Thu Lao. Similar to Nung [nut].
Also use Vietnamese [vie].
Tày is an official ethnic community. Traditional religion, Christian.