Postal code: 565100.

Telephone area code: 0856.

Administrative division code: 520624.

License plate code: Gui D.

Sinan County is affiliated to Tongren City, Guizhou Province. It is located in the northeast of Guizhou Province, west of Tongren City, and in the hinterland of Wuling Mountain. It borders Yinjiang Tujia and Miao Autonomous County to the east, Fenggang County to the west, Shiqian County to the south, and Dejiang County to the north, with a total area of ??2,230.5 square kilometers.

It has jurisdiction over 3 streets, 17 towns and 8 townships.

Street: Sidang Street, Guanzhongba Street, Shuangtang Street.

Towns: Tangtou Town, Xujiaba Town, Dabanchang Town, Wenjiadian Town, Parrot Creek Town, Hepengxi Town, Zhangjiazhai Town, Sunjiaba Town, Qinggangpo Town, Wengxi Town, Liangshuijing Town, Shaojiaqiao Town, Daheba Town, Tingziba Town, Xiangba Town, Changba Town and Banqiao Town.

Townships: Silin Tujia and Miao Township, Hujiawan Miao and Tujia Township, Kuanping Miao and Tujia Township, Fengyun Tujia and Miao Township, Sandaoshui Tujia and Miao Township, Tianqiao Tujia and Miao Township , Xinglong Tujia and Miao Township, Yangjiaao Miao and Tujia Township.