World religions
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Christianity is the biggest religion in the world. There are more than 2.2 billion people that practice any form of Christianity.
Christianity (2.2 billion)

16 percent of the world’s population is not affiliated with a faith, while 84 percent are affiliated.
Unbelievers (1.0 billion)

24.1 percent or about 1.8 billion of the world population are Muslims.
Muslims (1.6 billion)

At more than one billion, Hindus are the world’s third-largest group after Christians and Muslims. The large majority of Hindus, about 965 million, live in India.
Hindus (1.0 billion)
