Cheongju's 2021 population is now estimated at 720,584. In 1950, the population of Cheongju was 71,689. Cheongju has grown by 3,557 since 2015, which represents a 0.50% 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 Cheongju, which typically includes Cheongju's population in addition to adjacent suburban areas.