Dammam (ad-Dammām) is the largest city in the Eastern Province of Saudi Arabia, and the 3rd largest city in the kingdom after Riyadh and Jeddah .
Dammam is the largest city in the Eastern Province, and the sixth largest in Saudi Arabia, after Riyadh, Jeddah, Mecca, Medina and Taif. Like the other 12 regional capitals of Saudi Arabia, Dammam is not included within any governorate; instead, it is governed as a "municipality" (Arabic: أمانة; amanah) headed by a mayor (Arabic: أمين; amin). Dammam is a major administrative center for the Saudi oil industry. Together with the nearby cities of Dhahran and Al Khobar, Dammam forms part of the Dammam Metropolitan Area, which is commonly known as greater Dammam and has an estimated population of 4,140,000 as of 2012. Dammam and its suburbs form the center of the Dammam metropolitan area, also known as Greater Dammam, which is closely linked to the city through social, economic, and cultural ties. The city is growing at an exceptionally fast rate of 12% a year - the fastest in Saudi Arabia, the Gulf Cooperation Council, and the Arab world.