1,500,000 in China (2000 census). 35,000 in Jingxi and Napo counties. Population total all countries: 1,840,000.
Southwest Guangxi Zhuang Autonomous Region, Tiandeng, Daxin, Chongzuo, Ningming, Longzhou, Pingxiang, and Jingxi counties; Yunnan Province, Funing county, a few villages. Also in Viet Nam.
Officially classified within Zhuang nationality. The language is named for Zuojiang river that runs through this area, from northern Viet Nam into Longzhou, Chongzuo, and Fusui counties. Traditional religion, Daoist, Buddhist (Mahayana).