Persian Language, also known as Farsi, is the most widely spoken member of the Iranian branch of the Indo-Iranian languages, a subfamily of the Indo-European languages. It is the language of Iran (formerly Persia) and is also widely spoken in Afghanistan and, in an archaic form, in Tajikistan and the Pamir Mountain region.
Persian is spoken today primarily in Iran and Afghanistan, but was historically a more widely understood language in an area ranging from the Middle East to India. Significant populations of speakers in other Persian Gulf countries (Bahrain, Iraq, Oman, People’s Democratic Republic of Yemen, and the United Arab Emirates), as well as large communities in the USA.
Total numbers of speakers is high: over 40 million Farsi speakers (about 60% of Iran’s population); over 14 million Dari Persian speakers in Afghanistan (50% of the population according to CIA World FactBook & Britannica); and about 2 million Dari Persian speakers in Pakistan.