Lusaka's 2026 population is now estimated at 3,621,320. In 1950, the population of Lusaka was 31,169. Lusaka has grown by 150,450 in the last year, which represents a 4.33% 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 Lusaka, which typically includes Lusaka's population in addition to adjacent suburban areas.