 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.