Kunshan's 2025 population is now estimated at 873,638. In 1950, the population of Kunshan was 18,373. Kunshan has grown by 22,239 in the last year, which represents a 2.61% 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 Kunshan, which typically includes Kunshan's population in addition to adjacent suburban areas.