Abakaliki's 2021 population is now estimated at 601,712. In 1950, the population of Abakaliki was 9,215. Abakaliki has grown by 29,684 since 2015, which represents a 5.19% 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 Abakaliki, which typically includes Abakaliki's population in addition to adjacent suburban areas.