Chongjin's 2026 population is now estimated at 666,765. In 1950, the population of Chongjin was 158,000. Chongjin has grown by 4,999 in the last year, which represents a 0.76% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects . These estimates represent the Urban agglomeration of Chongjin, which typically includes Chongjin's population in addition to adjacent suburban areas.