The Arab presence in Iran clearly did not begin with the Arab destruction of the Sasanian empire in 633 AD. For centuries, Iranian rulers had maintained contacts with Arabs outside their borders, dealt with Arab subjects and client states in Iraq, and settled Arab tribesmen in various parts of the Iranian plateau.It follows that the "Arab" conquests and settlements were by no means the exclusive work of Arabs from the Hejaz and the tribesmen of inner Arabia. The Arab infiltration into Iran began before the Muslim conquests and continued as a result of the joint exertions of the civilized Arabs (ahl al-madar) as well is the desert Arabs (ahl al-wabar).
According to the Minorities at Risk Project 2001, about 40 per cent of Arabs are unskilled workers living in urban areas. The Arabs in the rural areas are primarily farmers and fishermen. The Arabs living along the Persian Gulf coastal plains are mostly pastoral nomads. Tribal loyalties are strong among rural Arabs, but also have an influence in urban areas. These have an impact on Arab socialisation and politicisation.