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.
Shia Islam in Nigeria
Although the majority of the Nigerian Muslim population is Sunni, there is a significant Shia minority, particularly in the northern states of Kano and Sokoto. However, there are no actual statistics that reflect a Shia population in Nigeria, and a figure of even 5% of the total Nigerian Muslim population is thought to be too high “because of the routine conflation of Shi’a with Sunnis who express solidarity with the Iranian revolutionary program, such as those of Zakzaki’s Ikhwani.”