Kaifeng's 2021 population is now estimated at 1,317,530. In 1950, the population of Kaifeng was 287,821. Kaifeng has grown by 43,243 since 2015, which represents a 3.39% 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 Kaifeng, which typically includes Kaifeng's population in addition to adjacent suburban areas.