Mbuji-Mayi's 2021 population is now estimated at 2,642,794. In 1950, the population of Mbuji-Mayi was 67,641. Mbuji-Mayi has grown by 117,531 since 2015, which represents a 4.65% 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 Mbuji-Mayi, which typically includes Mbuji-Mayi's population in addition to adjacent suburban areas.