Tajikistan Iranian diaspora   Region Western Asia ,  Central Asia Total speakers ca. 60-70 million, as first language (2006 estimates) [1] Language family Indo-European Indo-Iranian Iranian Western Iranian Southwestern Iranian Persian Dialects Tehrani Dari Tajik Khorasani Khuzestani Aimaq Hazaragi Judæo-Persian Bukhori Dezfuli Juhuri Writing system Perso-Arabic script ,  Cyrillic Official