Saudi Arabia's 2007 population was estimated to be about 27.6 million, including about 5.6 million resident foreigners. Until the 1960s, most of the population was nomadic or seminomadic; due to rapid economic and urban growth, more than 95% of the population now is settled. Some cities and oases have densities of more than 1,000 people per square kilometer (2,600 per sq. mi). Saudi Arabia has undergone a population boom of sorts in the last few decades. | Saudi Arabia's 2007 population was estimated to be about 27.6 million, including about 5.6 million resident foreigners. Until the 1960s, most of the population was nomadic or seminomadic; due to rapid economic and urban growth, more than 95% of the population now is settled. Some cities and oases have densities of more than 1,000 people per square kilometer (2,600 per sq. mi). Saudi Arabia has undergone a population boom of sorts in the last few decades. |