Area: 1,960,582 million sq. km. (784,233 sq. mi.)
Cities (2006 est.): Capital--Riyadh (pop. 4.3 million). Other cities--Jeddah (3.4 million), Makkah, (1.6 million), Dammam/Khobar/Dhahran, (1.6 million).
Terrain: Primarily desert with rugged mountains in the southwest.
Climate: Arid, with great extremes of temperature in the interior; humidity and temperature are both high along the coast.