Juba's 2026 population is now estimated at 521,590. In 1950, the population of Juba was 6,249. Juba has grown by 21,502 in the last year, which represents a 4.3% 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 Juba, which typically includes Juba's population in addition to adjacent suburban areas.