Zaoyang's 2023 population is now estimated at 602,782. In 1950, the population of Zaoyang was 21,335. Zaoyang has grown by 13,191 in the last year, which represents a 2.24% 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 Zaoyang, which typically includes Zaoyang's population in addition to adjacent suburban areas.