Kismaayo's 2025 population is now estimated at 581,320. In 1950, the population of Kismaayo was 3,328. Kismaayo has grown by 23,771 in the last year, which represents a 4.26% 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.