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.
British Iraqis
Although the majority of Iraqis are Muslim, there are also minorities including Chaldeans and Assyrian Christians, Jews, and followers of Mandeanism, Yazidism, Shabakism and Yarsan.