The Iranian Turks live mainly in the north west of Iran in the Eastern and Western Azarbaijan and Ardebil provinces (capitals Tabriz, Urumiyeh and Ardebil respectively), the Zanjan province up to Qazvin, in and around Hamedan, in Tehran, around Qom and Saveh, Khorasan province, and are scattered throughout many other parts of Iran.
The Turkish dialect spoken in both the Azarbaijan province in Iran and in the Republic of Azarbaijan is Oghoz, which is the mother tongue of the Iranian Turks.
The Iranian Baluchis are mostly of the Hanafi sect of the Sunni faith.
The Iranian origin theory, favoured by some notable scholars and sources, is based upon the ancient presence of Iranic tribes, such as the Medes, in IranianAzarbaijan, and Scythian invasions during the eighth century BCE.
Archaeological evidence indicates that the Iranian religion of Zoroastrianism was prominent throughout the Caucasus before Christianity and Islam and that the influence of various Persian Empires added to the Iranian character of the area.
The modern presence of the Iranian Talysh and Tats in Azerbaijan is further evidence of the former Iranian character of the region.