El Djelfa's 2021 population is now estimated at 527,033. In 1950, the population of El Djelfa was 10,450. El Djelfa has grown by 23,636 since 2015, which represents a 4.70% 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 El Djelfa, which typically includes El Djelfa's population in addition to adjacent suburban areas.