Qitaihe's 2021 population is now estimated at 588,212. In 1950, the population of Qitaihe was 101,534. Qitaihe has grown by 9,220 since 2015, which represents a 1.59% 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 Qitaihe, which typically includes Qitaihe's population in addition to adjacent suburban areas.