Yongin's 2021 population is now estimated at 1,103,265. In 1950, the population of Yongin was 50,821. Yongin has grown by 19,920 since 2015, which represents a 1.84% 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 Yongin, which typically includes Yongin's population in addition to adjacent suburban areas.