Kingston's 2026 population is now estimated at 607,664. In 1950, the population of Kingston was 278,076. Kingston has grown by 3,894 in the last year, which represents a 0.64% 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 Kingston, which typically includes Kingston's population in addition to adjacent suburban areas.