Deir Ez-Zor's 2021 population is now estimated at 329,890. In 1950, the population of Deir Ez-Zor was 26,387. Deir Ez-Zor has grown by 6,458 since 2015, which represents a 2.00% 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 Deir Ez-Zor, which typically includes Deir Ez-Zor's population in addition to adjacent suburban areas.