Sanhe's 2021 population is now estimated at 604,549. In 1950, the population of Sanhe was 3,091. Sanhe has grown by 28,308 since 2015, which represents a 4.91% 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 Sanhe, which typically includes Sanhe's population in addition to adjacent suburban areas.