Top 10 countries with highest percentage of Muslims
Islam is the fastest growing religion in the world, with Muslims constituting a sizeable demographic force.
The number of Muslims grew 21% between 2010 and 2020, from 1.7 billion to two billion. Muslims grew twice as fast as the rest of the world’s population. which swelled 10% during the last decade.
Muslims, meanwhile, grew from 24% to 26% as a share of the global population. But where do they reside?
Around 240 million Muslims are based in Indonesia, as of 2020. Along with those residing in Pakistan and India, they constitute a third of Muslims worldwide.

The top 10 countries with the largest number of Muslims, namely Indonesia, Pakistan, India, Bangladesh, Nigeria, Egypt, Iran, Turkey, Sudan and Algeria, are home to 65% of the world’s total Muslim population, equalling a combined 1.3 million individuals, according to Pew Research Center.
From a share of percentage, Morocco’s population is entirely Muslim, with 100% of its residents following Islam as recent as the year 2021, according to the World Population Review, citing Pew Research.

Host to rugged mountain ranges, Afghanistan hosts a staggering Muslim population, constituting 99.7% of its resident base.

Here’s a list of top 10 countries with the highest percentage of Muslims in 2021.
COUNTRY | MUSLIM POPULATION 2021 |
---|---|
Morocco | 100% |
Afghanistan | 99.7% |
Somalia | 99.7% |
Iran | 99.5% |
Tunisia | 99.5% |
Western Sahara | 99.4% |
Iraq | 99.1% |
Yemen | 99.1% |
Mauritania | 99.1% |
Mayotte | 98.6% |
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