Demographics of Iraq
97% of Iraqis follow Islam: 61% Shia and 34% Sunni. 1% of these describe themselves as "Just a Muslim". According to the CIA Factbook, Shias make up 60% of population, while Sunnis 35%. Christianity accounts for 5%, and the rest practice Mandaeism, Yazidism and other religions.
Iraq
Indigenous Neo Aramaic-speaking Assyrians, most of whom are adherents of the Chaldean Catholic Church, Assyrian Church of the East, Ancient Church of the East, Assyrian Pentecostal Church, Syriac Orthodox Church and Syriac Catholic Church account for most of the Christian population. Estimates for the numbers of Christians suggest a decline from 8–12% in the mid-20th century to 5% in 2008 or 1.6 million. More than half of Iraqi Christians have fled to neighbouring countries since the start of the war, and many have not returned, although a number are migrating back to the traditional Assyrian homeland in the Kurdish Autonomous Region.