双峰县
Hengyang County () is a county and the 5th most populous county-level division in the Province of Hunan, China; it is under the administration of Hengyang prefecture-level city. Located in the north of Hengyang City and the south east of Hunan province, the county is bordered to the north by Shuangfeng County, to the west by Shaodong County, to the south by the counties of Qidong and Hengdong and the districts of Zhengxiang, Shigu and Zhuhui, to the east by Nanyue District and Hengshan County. Hengyang County covers with a population of 1,235,100 (as of 2015). The county has 17 towns under its jurisdiction, the county seat is Xidu Town ().