Matadi's 2026 population is now estimated at 484,778. In 1950, the population of Matadi was 59,672. Matadi has grown by 18,987 in the last year, which represents a 4.08% 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 Matadi, which typically includes Matadi's population in addition to adjacent suburban areas.