Literature in Iran
Persian is Iran's official language and the language of the country's ethnic majority (i.e., the Persians), and Persian literature has been the country's most influential literary tradition. Apart from Iran, Persian literature was used and developed further through several medieval Persianate societies in Asia Minor, Central Asia, and South Asia, and the language is still used widely in Central Asia (Tajikistan and Uzbekistan) and Afghanistan.
Demographics of Iran
The CIA World Factbook (which is based on 2013 statistics) gives the following numbers for the languages spoken in Iran today: Persian, Luri, Gilaki and Mazandarani 66%; Azerbaijani and other Turkic languages 18%; Kurdish 10%; Arabic 2%; Baloch 2%; others 1% (Armenian, Georgian, Circassian, Assyrian, etc.).