Religion in Iraq
Islam is the official state religion in the Republic of Iraq, but the constitution guarantees freedom of religion. Iraq is a multi ethnic and multi religious country with Islam, Christianity, Yazdanism, Zoroastrianism, Shabakism, Judaism, Mandaeism, Bahā'i, Ahl-e Haqq-Yarsanis, Ishikism and numerous other religions all having a presence in the country. Shia Islam is the main religion in Iraq followed by 60–65% of the population, while Sunni Islam is followed by 32–37% of the people. Many cities throughout Iraq have been areas of historical prominence for both Shia and Sunni Muslims, including Najaf, Karbala, Baghdad and Samarra.
Iraq
Religions in Iraq are dominantly Abrahamic with "Muslim" (official) 99% (Shia 55-60%, Sunni 40%), "Christian" Shia and Sunni population. The CIA World Factbook estimates that around 65% of Muslims in Iraq are Shia, and around 35% are Sunni. A 2011 Pew Research Center estimates that 51% of Muslims in Iraq are Shia, 42% are Sunni, while 5% identify themselves as "Just a Muslim". The Sunni Muslims, 12-13 million in a population of 36 million, include Arabs, most Turkomen, and Kurds.