Source: Unpublished manuscript from Jerold A. Edmondson.

Red Gelao is spoken in the villages of Na Khê and Bìch Ðich in Yên Minh District, Hà Giang Province, Vietnam. A few speakers were also found in Malipo County, Yunnan, China, and there may also be speakers in Guizhou, China. In Vietna, only around 50 speakers are left.

Data is highly limited, since the consultants were often only semi-speakers of Red Gelao.

Andrew Hsiu