The county seat was originally known as Chunggangjin (중강진), but is now known as Chunggang ŭp.

Chunggang looks across the Yalu River at China, and borders Ryanggang province to the south.

The Chunggang Revolutionary Site is associated with Kim Hyŏng-jik.

[3] Chunggang County is divided into 1 ŭp (town), 1 rodongjagu (workers' district) and 8 ri (villages): Chunggang has a monsoon influenced humid continental climate (Köppen Climate Classification Dwa) with hot summers and severely cold winters.

The climate features very large differences between summer and winter temperatures.