Deir ez-Zor's 2025 population is now estimated at 378,586. In 1950, the population of Deir ez-Zor was 26,387. Deir ez-Zor has grown by 15,496 in the last year, which represents a 4.27% 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.