25 Countries Where Muslim Population Will Increase The Most By 2030

4. Indonesia

Increase in Population between 2020 and 2030: 15.40 million  

Muslim Population in 2030: 245.02 million  

Percentage Increase: 6.71%

As of 2020, Indonesia is home to the largest number of Muslims in the world and has a Muslim population of 229.62 million.  The population of Muslims in Indonesia is projected to rise by 6.71% to 245.02 million by 2030. However, Indonesia is forecasted to fall behind India in terms of the largest population of Muslims. By 2030, there will be 15.4 million more Muslims in Indonesia compared to 2020.