Chà Ângp'yà Âng County is a county in South Hamgyà Âng province, North Korea. It borders South P'yà Ângan province to the south, and the East Korea Bay to the east.
The first historical recorded names for this region was Paji () and Sonwi (). In 1041, it was renamed to Chongju (). in 1413, during the rule of King Taejong, it was renamed from Chongju to Chongpyong due to having the same name as Chongju located in Pyongan Province.
The highest point is Noranbong. Most of the county's land is mountainous, but the southeast region is flat. The chief river is the Kumjin River. In the winter, its climate is continental and the weather is bitterly cold; however, the influence of the Rangrim Mountains makes Chà Ângp'yà Âng's climate milder than that of the Yellow Sea coast.
Chà Ângp'yong county is divided into 1 à Âp (town), 2 rodongjagu (workers' districts) and 42 ri (villages):
Rice is cultivated on the level ground of the southeast, where the soil is fertile. Small amounts of other farming and orcharding also take place. Due to the county's coastal location, fishing is also practised.
Mining is a minor component of the local economy.
Chà Ângp'yà Âng county is served by the P'yà Ângra Line of the Korean State Railway.