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.
Religion in Iran
Sunni websites and organizations complain about the absence of any official records regarding their community and believe their number is much greater than what is usually estimated. Demographic changes have become an issue for both sides. Scholars on either side speak about the increase in the Sunni population and usually issue predictions regarding demographic changes in the country. One prediction, for example, claims that the Sunnis will be the majority in Iran by 2030.