Kassala's 2025 population is now estimated at 411,574. In 1950, the population of Kassala was 30,312. Kassala has grown by 11,862 in the last year, which represents a 2.97% 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 Kassala, which typically includes Kassala's population in addition to adjacent suburban areas.