Sinuiju's 2026 population is now estimated at 335,294. In 1950, the population of Sinuiju was 180,000. Sinuiju has grown by 2,276 in the last year, which represents a 0.68% 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 Sinuiju, which typically includes Sinuiju's population in addition to adjacent suburban areas.