Cuiaba's 2021 population is now estimated at 591,522. In 1950, the population of Cuiaba was 27,475. Cuiaba has grown by 2,956 since 2015, which represents a 0.50% 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 Cuiaba, which typically includes Cuiaba's population in addition to adjacent suburban areas.