It was located in the southern part of modern Hohhot and Ulanqab prefectures in Inner Mongolia.
In late Western Han dynasty, it administered 12 counties, namely Chengle (成樂), Tongguo (桐過), Duwu (都武), Wujin (武進), Xiangyin (襄陰), Wugao (武皋), Luo (駱), Antao (安陶), Wucheng (武成), Wuyao (武要), Dingxiang (定襄) and Fulu (復陸).
In 140 AD, Dingxiang had 5 counties: Shanwu, Luo, Tongguo, Wucheng and Zhongling.
[3] Toward the end Han dynasty, the area's population decreased sharply as residents fled from invading northern nomadic peoples, and the commandery was dissolved.
[4] In the Sui and Tang dynasties, the name Dingxiang Commandery was revived to refer to Yun (雲) and Xin (忻) prefectures, respectively.