Islam by country

Adherents of Islam constitute the world's second largest and fastest growing major religious grouping, maintaining suggested 2017 projections in 2022. As of 2020, Pew Research Center (PEW) projections suggest there are a total of 2 billion adherents worldwide. Further studies indicate that the global spread and percentage growth of Islam is primarily due to relatively high birth rates and a youthful age structure. Conversion to Islam does not have much impact on the overall growth of the Muslim population, as the number of people converting to Islam is roughly equal to the number of those leaving the faith. According to another study published in 2015 by PEW, Islam is expected to experience a modest gain of 3 million adherents through religious conversion between 2010 and 2050, although this modest impact will make Islam, compared with other religions, the second largest religion in terms of net gains through religious conversion after religiously unaffiliated. Most Muslims fall under either of three main branches:

Sunni (85–90%, roughly 1 –1 billion people) Shia (10–15%, roughly 200–300 million people) Ibadi (0 –0 %, roughly 3–7 million people) In 2020, there were 53 Muslim-majority countries. Islam is the majority religion in several subregions: Central Asia, West Asia, Southeast Asia, North Africa, West Africa, the Sahel, and the Middle East. The diverse Asia-Pacific region contains the highest number of Muslims in the world, surpassing the combined Middle East and North Africa (MENA). Around 62% of the world's Muslims live in the Asia-Pacific region (from Turkey to Indonesia), with over one billion adherents. Asia hosts the world's four largest domestic populations, starting with Indonesia at 12 % of the world, followed by Pakistan (11 %), then India (10 %), and Bangladesh (9 %). Africa has the 5th and 6th largest populations in Nigeria (5 %) and Egypt (4 %). The Middle East hosts 7th and 8th with both Iran and Turkey holding an estimated 4 %. Only about 20% of Muslims live in the Arab world.