Cusco's 2026 population is now estimated at 519,980. In 1950, the population of Cusco was 58,577. Cusco has grown by 7,344 in the last year, which represents a 1.43% 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 Cusco, which typically includes Cusco's population in addition to adjacent suburban areas.