Ad-Dammam's 2026 population is now estimated at 1,397,440. In 1950, the population of Ad-Dammam was 20,000. Ad-Dammam has grown by 21,840 in the last year, which represents a 1.59% 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 Ad-Dammam, which typically includes Ad-Dammam's population in addition to adjacent suburban areas.