Located on the south western corner of Hunan province, Tongdao borders Guizhou to the west and Guangxi to the south. The county lies in the southernmost part of Huaihua, it is the least populous and least densely populated county-level division of Huaihua.[3] Tongdao borders to the northwest by Jingzhou County, to the northeast by Suining and Chengbu Counties, to the southeast and the south by Longsheng and Sanjiang Counties of Guangxi, to the west by Liping County of Guizhou. The county covers 2,239 km2 (864 sq mi), as of 2015, it has a census registered population of 242,100 and a permanent resident population of 212,300.[4] The county has 8 towns and 3 townships under its jurisdiction, the county seat is Shuangjiang Town (双江镇).[5][6]
There are two Miao subgroups in Tongdao County, namely Hua Miao (花苗mjiu55 ken35) and Cao Miao (草苗mjiu55). Despite being officially classified by the Chinese government as ethnic Miao, Cao Miao is actually a Kam-Sui language.[7]
Climate
Climate data for Tongdao, elevation 398 m (1,306 ft), (1991–2020 normals, extremes 1981–present)
^怀化市土地利用总体规划(2006-2020年) [Huaihua City Land Use Plan (2006–20)] (in Chinese). Ministry of Natural Resources of the People's Republic of China. 2011-12-28. Retrieved 2022-08-30.
^2015年通道县国民经济和社会发展统计公报 [Statistical Communiqué of Tongdao County on the 2015 National Economic and Social Development]. Huaihua People's Government.
^《湖南省民政厅关于同意通道县乡镇区划调整方案的批复》(湘民行发〔2015〕78号) [Result on adjustment of township-level administrative divisions of Tongdao County on 25 November 2015]. rednet.cn Hunan. 2015-12-04. Archived from the original on 2018-07-26.