Muslims are the fastest-growing faith group, followed by the religiously unaffiliated, according to a new Pew Research Centre study measuring the evolution of the global religious population between 2010 and 2020.
Christianity grew by 122 million members in that decade, but declined as an overall slice of the world’s population. Still, Christianity remains the world’s largest religion.
The world’s Muslim population increased by 347m over 10 years – more than all the other religions combined – primarily due to natural demographic growth. Muslims are largely concentrated in regions with high population growth, like the Middle East-North Africa region, where they represent 94.2pc of the population, and sub-Saharan Africa, where they represent 33pc.
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