Ibb's 2021 population is now estimated at 690,456. In 1950, the population of Ibb was 2,906. Ibb has grown by 41,567 since 2015, which represents a 6.41% 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 Ibb, which typically includes Ibb's population in addition to adjacent suburban areas.