Shuangyashan's 2021 population is now estimated at 507,257. In 1950, the population of Shuangyashan was 25,000. Shuangyashan has grown by 4,078 since 2015, which represents a 0.81% 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 Shuangyashan, which typically includes Shuangyashan's population in addition to adjacent suburban areas.