|— County —|
|Country||People's Republic of China|
|County seat||Kaitong (开通镇)|
|• Total||8,476 km2 (3,273 sq mi)|
|Elevation||143 m (469 ft)|
|• Density||41/km2 ( 110/sq mi)|
|Time zone||China Standard (UTC+8)|
Tongyu (Chinese: 通榆; pinyin: Tōngyú) is a county of northwestern Jilin province, China, bordering Inner Mongolia to the south and west. It is under the administration of Baicheng City, 92 kilometres (57 mi) to the north-northwest, with a population of 350,000[when?] residing in an area of 8,476 km2 (3,273 sq mi).
- Kaitong (开通镇), Zhanyu (瞻榆镇), Shuanggang (双岗镇), Xinglongshan (兴隆山镇), Bianzhao (边昭镇), Hongxing (鸿兴镇), Xinhua (新华镇), Wulanhua (乌兰花镇)
- Yangjing Township (羊井乡), Yongqing Township (永青乡), Xinfa Township (新发乡), Xinxing Township (新兴乡), Tuanjie Township (团结乡), Shihuadao Township (十花道乡), Bamian Township (八面乡), Sugongtuo Township (苏公坨乡), Xianghai Mongol Ethnic Township (向海蒙古族乡), Baolawendu Mongol Ethnic Township (包拉温都蒙古族乡)
- "2011年统计用区划代码和城乡划分代码：通榆县" (in Simplified Chinese). National Bureau of Statistics of the People's Republic of China. Retrieved 2012-07-16.
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