Usi is a kun, or county, in westernmost Chagang Province, North Korea. It looks across the Yalu River into the People's Republic of China. Within North Korea, it borders Chosan and Kopung to the east, Songwon to the south, and North Pyongan Province's Pyoktong county to the west. Originally part of Pyoktong, it was made a separate county in 1952 as part of a general reorganization of local government; in 1954, it was transferred from North Pyongan to Chagang.

There are no railroads in Usi, but it is connected by road to the neighboring districts of Chosan and Pyoktong, and beyond Pyoktong to Sinuiju. In addition, the Yalu is used for transportation. The stretch of the Yalu in Usi is part of the massive "Lake Supung", North Korea's largest reservoir.

The Yalu valley is farmed for rice, while the upland regions produce maize, potatoes, and sesame. There is little manufacturing. The county's Kaha-ri district is known for its medicinal waters.

Administrative divisions Usi county is divided into one town (ŭp), one worker's district (rodongjagu), and 22 villages (ri).Usi-gun - JoongangIlbo Chosŏn'gŭlHanchaUsi-ŭp우시읍 Palŭl-lodongjagu발은노동자구 Kŭmsŏng-ri금성리 Kŭmyang-ri금양리 Usang-ri우상리 Ujung-ri우중리 Siha-ri시하리 Sisang-ri시상리 P'yŏlha-ri별하리 P'yŏlsang-ri별상리 Kaha-ri가하리 Kajung-ri가중리 Kasang-ri가상리 P'yŏngsang-ri평상리 Taep'yŏng-ri대평리 Sangp'yŏng-ri상평리 Hap'yŏng-ri하평리 Puhŭng-ri부흥리 Pukha-ri북하리 Puksang-ri북상리 Osang-ri오상리 Oha-ri오하리 Ryonghae-ri룡해리 Hachang-ri하창리

See also Geography of North Korea Administrative divisions of North Korea

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