Bujumbura's 2026 population is now estimated at 1,426,040. In 1950, the population of Bujumbura was 18,825. Bujumbura has grown by 75,890 in the last year, which represents a 5.62% 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 Bujumbura, which typically includes Bujumbura's population in addition to adjacent suburban areas.