Zhangjiakou's 2021 population is now estimated at 1,468,954. In 1950, the population of Zhangjiakou was 213,590. Zhangjiakou has grown by 34,305 since 2015, which represents a 2.39% 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 Zhangjiakou, which typically includes Zhangjiakou's population in addition to adjacent suburban areas.