Dongan County, under the Yongzhou City of Hunan Province. It is located in the southwest of Hunan Province, the northwest edge of Yongzhou City, the upper reaches of Xiangjiang River, east to Lengshui Beach District, southeast to Lingling District, southwest to Quanzhou County, west to Xinning County, northwest to Shaoyang County, northeast to Qidong County, with a total area of 2204.441 square kilometers. In 2021, Dongan County has 489,700 permanent residents and 631,500 registered residents. There are 21 ethnic minorities, including Yao, Zhuang, Dong and Hui, with a population of 3,764, accounting for 0.6% of the county's total population. As of October 2022, Dongan County has jurisdiction over 13 towns and 2 townships. The people's government of Dongan County is located at 88 Dongan Avenue, Baiya Town.

Western Jin Dynasty, analysis Lingling County Guan Yang County set Yang County. 1968, belongs to Lingling area. In 1995, Lingling area was abolished and Yongzhou City was set up at prefecture level, under which Dong 'an belonged.

In 2021, the GDP of Dongan County was 20.909 billion yuan, an increase of 8.1% over the previous year. The added value of the primary industry was 4.328 billion yuan, and that of the secondary industry was 7.760 billion yuan; The value added of the tertiary industry was 8.820 billion yuan, up by 7.3%.