The population is balanced (51 percent male, 49 percent female), extremely young, and urban.
More than three-quarters of Iran's habitants are under thirty years of age, and an equal percentage live in urban areas.
Its neighbors are, on the north, Azerbaijan, Armenia, and Turkmenistan; on the east, Pakistan and Afghanistan; and on the west Turkey and Iraq.
It is important to note that, with some minor exceptions, all ethnic groups living in Iran, whatever their background or primary language, identify strongly with the major features of Iranian culture and civilization.
The rest of the population speaks languages drawn from Indo-European, Ural-Altaic (Turkic), or Semitic language families.
The principal non-Persian Indo-European speakers include Kurds, Lurs, Baluchis, and Armenians, making up approximately 15 percent of the population.
Other Turkic groups include the Qashqa'i tribe in the south and southwest part of the central plateau, and the Turkmen in the northeast.
Semitic speakers, constituting approximately 10 percent of the population, include a large Arabic-speaking population in the extreme southwest province of Khuzestan, and along the Persian Gulf Coast, and a small community of Assyrians in the northwest, who speak Syriac.