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
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.