Kismaayo's 2026 population is now estimated at 605,936. In 1950, the population of Kismaayo was 3,328. Kismaayo has grown by 24,616 in the last year, which represents a 4.23% 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 Kismaayo, which typically includes Kismaayo's population in addition to adjacent suburban areas.