Mombasa's 2025 population is now estimated at 1,553,460. In 1950, the population of Mombasa was 93,871. Mombasa has grown by 58,240 in the last year, which represents a 3.9% 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 Mombasa, which typically includes Mombasa's population in addition to adjacent suburban areas.