High Quality Content by WIKIPEDIA articles! This article is about the demographic features of the population of Saudi Arabia, including population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population. Demographics of Saudi Arabia, Data of FAO, year 2005 ; Number of inhabitants in thousands. Population pyramid. Saudi Arabia's July 2006 population is estimated to be over 27 million; including about 5.5 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. Saudi Arabia's population is characterized by rapid growth and a large cohort of youths.