Islam was the world’s fastest-growing religion from 2010 to 2020
From 2010 to 2020, the number of Muslims increased by 347 million people to 2.0 billion people.
Numbers, Facts and Trends Shaping Your World
From 2010 to 2020, the number of Muslims increased by 347 million people to 2.0 billion people.
Christians are still a majority in Europe but disaffiliation thinned the Christian population from 2010 to 2020.
Christians remain the largest religious group, and Muslims grew the fastest from 2010 to 2020. Read how the global share of Buddhists, Hindus, Jews and the religiously unaffiliated changed.
Muslims are the world’s fastest-growing and second-largest religious group. In the Middle East-North Africa region, they make up 94% of the population.
Half of the world’s population lives in just seven countries. But some of the world’s religious groups are even more concentrated than that.
Read how demographic factors – age composition, life expectancy and fertility rates – and religious switching changed the global religious landscape.
Most people in the Latin America-Caribbean region are Christian. The region’s unaffiliated population grew rapidly since 2010.
Read our deep-dive on religious migration trends in Europe, the Gulf Cooperation Council countries, India and the United States.
Migrants tend to move to regions where their religion is common, but some regions also see large influxes of migrants from minority religious groups.
By some measures, the world’s most religious countries are mostly in the Middle East, South and Southeast Asia, sub-Saharan Africa and Latin America.
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