County and Shara District in the East Hamadan Province, some regions Qazvin Province and also Azerbaijani minorities living in Markazi, Kordestan, Gilan and Kermanshah. Smaller groups, such as Armenians, Assyrians, Kurds, Tats, Talyshs, Jews, Circassians, (and other Peoples of the Caucasus), and Persians also inhabit the region. Religion The majority of Azerbaijanis in Azerbaijan are followers of Twelver Shia Islam. Azerbaijanis commemorate Shia holy days (ten first days of the holy month of Muharram) minority Sunni Azerbaijani Turks (Shafi and Hanafi) who live in the Ardabil Province (Hashatjin and villages of Bileh Savar County) and West Azerbaijan province (near the cities of Urmia, Khoy and Salmas) and have population about 200,000 people in this area. Immigration Azerbaijani people mostly live in northwest parts of Iran, but large Azerbaijani populations can be found in Khorasan, mostly in Mashhad, as well as central Iran, due to internal migration to Tehran, Karaj, and Qum. Where they have settled, they have become prominent – not only among urban and industrial working classes – but also in commercial, administrative, political, religious, and intellectual circles. Azerbaijanis make up 25%– 33% of Tehran and of Tehran Province's population. They are the largest ethnic groups after Persians in Tehran and the Tehran Province. The governor of Tehran is Hossein Hashemi from Sarab; he was born in East Azerbaijan; Ali Khamenei, the Supreme Leader of Iran, was born in Mashhad and is of Azeri origin. The journals Varliq and Azari are printed by the Azerbaijani people in Tehran. Population According to the population census of 2012, the four provinces of East Azerbaijan (2012 pop. 3,724,620), West Azerbaijan (2012 pop. 3,080,576), Zanjan (2012 pop. 1,015,734), and Ardabil (2012 pop. 1,248,488) have a combined population of 9 million people. Administrative divisions Azerbaijan's major cities are Tabriz (the capital of East Azerbaijan), Urmia (the capital of West Azerbaijan), Zanjan (the capital of Zanjan Province), Ardabil (the capital of Ardabil Province) and Major cities non-capital of Province's Azerbaijan are Khoy and Maragheh. New 2014 administrative divisions During Hassan Rouhani's government, the Ministry of Interior declared that the provinces of Iran would be organized into regions. Region 3 in Northwest Iran includes East Azerbaijan Province, West Azerbaijan Province, Ardabil Province, Zanjan Province, Gilan Province and Kurdistan Province. Culture Azerbaijanis, a Turkic speaking people, are culturally a part of the Iranian peoples and have influenced Iranian culture. At the same time, they have influenced and