from Wikipedia Dammam:
Dammam (Also Ad Dammām) (Arabic: الدمام) is the capital of the Eastern Province in Saudi Arabia.
Dammam is the largest city in the Eastern Province; Dammam Port is one of the largest on the Persian Gulf. Its port for import-export traffic is second to Jeddah's port.
It is served by the new King Fahd International Airport, which is about 20 km to the west, served by a three-lane highway. Other cities that surround Dammam are Khobar, which is a thriving modern economic hub, and Dhahran, which is the headquarters for Saudi Aramco, the largest oil company in the world, and Qatif, the populated fishing and agricultural town.
Together (Dammam, Khobar & Dhahran) the cities have a population of around 2 million, of whom 750,000 live in the city of Dammam itself. The local sports stadium is Prince Mohamed bin Fahd Stadium.
The city is located in eastern Saudi Arabia, with 744,321 inhabitants (2004 estimate). It is the capital of the Eastern Province with 3.3 million inhabitants (2003 estimate). Dammam lies on tip of land stretching out into the Persian Gulf, forming a large metropolitan and industrial area, with about 1.2 million inhabitants, together with Khobar, Qatif and Dhahran. Dammam is a major seaport, involved in a wide variety of export and import. It is a center for petroleum and natural gas, but also the center of all commerce in the eastern parts of the kingdom. There is some agriculture, largely dealing with livestock and dairy products. Dhahran has excellent connections with other urban centers of Saudi Arabia by highways, and is also linked to Bahrain with a causeway. Dammam is also the terminus of the railroad to Riyadh. The King Fahd International Airport is shared by all the cities in the region. Dammam is a modern city, but has seen less investments and fewer projects than Khobar.