Nigeria

The main religions in Nigeria are Islam and Christianity.

An excerpt from the article 19 facts about Nigeria

Nigerians are almost evenly divided between Muslims and Christians, with a small minority of adherents of traditional African and other religions. Recent years have seen a decline in the proportion of Christians in Nigeria’s population due to a lower fertility rate compared to Muslims. It is estimated that Muslims will make up about 60 percent of the country by 2060.

Islam dominates in the northwestern part of the country, and Christianity (mainly Catholicism) in southeastern Nigeria.