Tanzania’s population consists of Christians, Muslims, and followers of indigenous religions. The Christian population is mostly composed of Roman Catholics. Among Protestants the strong numbers of Lutherans and Moravians point to the German past of the country, the numbers of Anglicans to the British history of Tanganyika and others are Pentecostal groups. Most Zanzibar’s are Muslim.
On the mainland, Muslim communities are concentrated in coastal areas, with some large Muslim majorities also in inland urban areas especially and along the former slave caravan routes. A large majority of the Muslim population is Sunni. There are also active communities of other religious groups, primarily on the mainland, such as Buddhists, Hindus, and Bahais.