Tehran's 2020 population is now estimated at 9,134,708. In 1950, the population of Tehran was 1,041,349. Tehran has grown by 579,619 since 2015, which represents a 1.32% 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 Tehran, which typically includes Tehran's population in addition to adjacent suburban areas.