Farsi, also known as Persian or Iranian Persian, is the official language of Iran and slightly more than half of all citizens speak it as a first language, as of 2015. The language is most commonly spoken in the central areas and along the border with Afghanistan.
Farsi is the official language of Iran and used on government documents, in schools, and on television and radio broadcasts. It is closely related to Dari-Persian, a language spoken in Afghanistan. Populations that speak primarily Farsi span the Iran-Afghanistan border. However, Iran is very linguistically diverse, and Farsi is less common in populations along the extreme east and west of the country, excluding the Afghan border. Other common languages spoken in Iran include Kurdish, Azeri Turkic and Arabic.