It borders Hwapyong and Rangrim to the east, Kanggye and Sijung to the west, Songgan to the south, and Chasong to the north.

Black pottery, stone axes Bronze daggers, and crescent stone knives found in Gongwidong and Pungryongdong (the dongs that existed when it was still part of greater Kanggye county.

In the early Iron Age, knife money from the Ancient Chinese state of Yan was found in Nonamdong (Dong which was part of Kanggye county, modern day Ronam-ri, Sijung County.

Animals are raised in the county, utilising mountains and fields for grazing.

[4] Changgang is served by road and rail, with the Kanggye Line passing through the southeast.