Zhoukou's 2021 population is now estimated at 671,419. In 1950, the population of Zhoukou was 82,701. Zhoukou has grown by 21,359 since 2015, which represents a 3.29% 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 Zhoukou, which typically includes Zhoukou's population in addition to adjacent suburban areas.