According to CIA World Factbook, the people of the Republic of the Congo are largely a mix of Catholics (33.1%), Awakening Lutherans (22.3%) and other Protestants (19.9%). Followers of Islam makeup 1.6%, and this is primarily due to an influx of foreign workers into the urban centers.
Christianity is the largest religion in Republic of the Congo.
Most Muslim workers in urban centers are immigrants from West Africa and Lebanon, with some also from North Africa. The West African immigrants arrived mostly from Mali, Benin, Togo, Mauritania, and Senegal. The Lebanese are primarily Sunni Muslims. There are also 6,000 followers of the Ahmadiyya school of Islam in the country.
A small minority of Christians practice Kimbanguism, a syncretistic movement that originated in the neighboring Democratic Republic of the Congo. While retaining many elements of Christianity, Kimbanguism also recognizes its founder (Simon Kimbangu) as a prophet and incorporates African traditional beliefs, such as ancestor worship. Mystical or messianic practices have been associated with opposition political movements, including some elements of the armed insurrection in the southern part of the country from 1997 to 2001. While the association persists, its influence has diminished considerably since 2003.