Libya has a small population within its large territory, with a population density of about 3 people per square kilometre (8.5/mi²) in the two northern regions of Tripolitania and Cyrenaica, and less than one person per square kilometre (1.6/mi²) elsewhere. Libya is thus one of the least densely populated nations by area in the world. 90% of the people live in less than 10% of the area, mostly along the coast. More than half the population is urban, concentrated to a greater extent, in the two largest cities, Tripoli and Benghazi. Native Libyans are a mixture of indigenous Berber peoples and the later arriving Arabs. There are small Tuareg (a Berber population) and Tebu tribal groups concentrated in the south, living nomadic or semi-nomadic lifestyles. Among foreign residents, the largest groups are citizens of other African nations, including North Africans (primarily Egyptians and Tunisians), and Sub-Saharan Africans. According to the CIA Factbook, Libyan Berbers and Arabs constitute 97% of the population; the other 3% are Greeks, Maltese, Italians, Egyptians, Afghanis, Turks, Indians, and Sub-Saharan Africans. However, this only counts legal residents, as Libya is also home to a large illegal Sub-Saharan African population which according to some estimates numbers as much as a million. The main language spoken in Libya is Arabic, which is also the official language. Tamazight (i.e. Berber languages), which do not have official status, are spoken by Libyan Berbers. Berber speakers live above all in the Jebel Nafusa region (Tripolitania), the town of Zuwarah on the coast, and the city-oases of Ghadames, Ghat and Awjila. In addition, Tuaregs speak Tamahaq, the only known Northern Tamasheq language. Italian and English are sometimes spoken in the big cities, although Italian speakers are mainly among the older generation. Family life is important for Libyan families, the majority of which live in apartment blocks and other independent housing units, with precise ...