Cixi's 2021 population is now estimated at 1,672,457. In 1950, the population of Cixi was 3,160. Cixi has grown by 63,236 since 2015, which represents a 3.93% 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 Cixi, which typically includes Cixi's population in addition to adjacent suburban areas.