While Christians remained the world’s largest religious group at the end of the decade that ended in 2020, Christianity’s growth did not keep up with global population increase. But Islam – the world’s fastest-growing major religion – increased its share of the world population, as did the religiously unaffiliated, the Pew Research Center found in a report released Monday.

Nearly a quarter of the world's population did not identify with a religion in 2020 (24.2 per cent), as opposed to 23.3 per cent in 2010.{ai:summary}Christianity remains the largest religion globally but is not growing at the same rate as the overall population. In contrast, Islam is the fastest-growing major religion, alongside an increase in the number of individuals identifying as religiously unaffiliated. #religion

Islam growing, Christianity slipping as share of world population, survey finds

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