Laos: spoken in the 8 northern provinces of Luang Namtha, Udomsai, Bokeo, Sayaburi, Phongsali, Luang Prabang, and Chiengkhwang, with a few villages near Vientiane.
Vietnam: Kim Hua, Sop Pot, Sop Caw and Pung Kamong Villages, Kim Da Subdistrict, Tương Dương District, Vinh City, Nghệ An Province.