Archive · 11 Jun 2025
Pew Study: Islam Fastest-Growing Religion, Christianity Declines
A recent study looked at how religions have changed across the world from 2010 to 2020.
The study revealed that the number of Muslims grew the fastest.
Although Christianity is still the largest, it decreased slightly as a percentage of the population.
Hindus are the fourth largest group, with their numbers increasing.
Also, people who don't follow any religion have become a larger group.
The changes were influenced by births, deaths, and where people move to.
Islam is the world's fastest-growing religion, increasing by 347 million between 2010 and 2020.
Christianity remains the largest religion despite a decline in its percentage share.
The study, by Pew Research Center, analyzed global religious populations from 2010 to 2020.
Hinduism is the fourth-largest religion with growth observed, particularly in the Middle East-North Africa region.
The religiously unaffiliated are the third-largest group and their numbers have risen.
- Who
- The Pew Research Center conducted the study.
- What
- A Pew Research Center study revealed shifts in global religious demographics from 2010 to 2020.
- When
- The study analyzed data between 2010 and 2020.
- Where
- Globally, with notable trends in regions such as the Middle East-North Africa, Asia Pacific, and North America.
- Why
- Population growth, migration, and varying birth and death rates contribute to these changes.
- Muslim Population Growth (2010-2020)
- 347 million
- Christianity Share Decline
- 1.8%
- Hindu Population Share
- 14.9%
- Religiously Unaffiliated
- 24.2%
