Yongcheng's 2025 population is now estimated at 547,843. In 1950, the population of Yongcheng was 3,109. Yongcheng has grown by 12,590 in the last year, which represents a 2.35% 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 Yongcheng, which typically includes Yongcheng's population in addition to adjacent suburban areas.