According to the Pew Research Center in 2010, there were 50 Muslim-majority countries.[15][16] Around 62% of the world's Muslims live in the Asia-Pacific region (from Turkey to Indonesia), with over one billion adherents.[17] According to the Pew Research Center in 2017, the largest Muslim population in a country is in Indonesia, a country home to 12.7% of the world's Muslims, followed by Pakistan (11.1%), India (10.9%) and Bangladesh (9.2%).[8][18]
About 20% of Muslims live in the Arab world.[19] In the Middle East, Iran and Turkey are the largest Muslim-majority countries, while Egypt and Nigeria in Africa have the same status.[8][18]
^* Islamic Beliefs, Practices, and Cultures. Marshall Cavendish Reference. 2010. p. 130. ISBN978-0-7614-7926-0. Retrieved 30 November 2019. Within the Muslim community, the percentage of Sunnis is generally thought to be between 85 percent, with the Shia accounting for 15.5 percent and with the wahabis controlling 5 percent, although some sources estimate their numbers at 20 percent. A common compromise figure ranks Sunnis at 90 percent and Shias at 10 percent.
"Quick guide: Sunnis and Shias". BBC News. 6 December 2011. Retrieved 30 November 2019. The great majority of the world's more than 1.5 billion Muslims are Sunnis – estimates suggest the figure is somewhere between 85% and 90%.
Frederick Denny (2010). Sunni Islam: Oxford Bibliographies Online Research Guide. Oxford University Press. p. 3. ISBN978-019980647-8. Sunni Islam is the dominant division of the global Muslim community, and throughout history it has made up a substantial majority (85 to 90 percent) of that community.
Riaz Hassan (2008). Inside Muslim Minds. Melbourne University Press. p. 20. ISBN9780522854817. Approximately 20 per cent of the world's Muslims belong to the Shi'ah sect; around 80 per cent are Sunni Muslims.
David Robertson (2002). A Dictionary of Modern Politics (Third ed.). Europa Publications. p. 252. ISBN1-85743-093-X. It is notable that while a large majority, probably 80%, of the world's Muslims are Sunni...
"Shiʿi". Encyclopædia Britannica Online. 4 October 2019. Retrieved 30 September 2019. In the early 21st century some 10–13 percent of the world's 1.6 billion Muslims were Shiʿi.
"Shia". Berkley Center for Religion, Peace, and World Affairs. Archived from the original on 15 December 2012. Retrieved 5 December 2011. Shi'a Islam is the second largest branch of the tradition, with up to 200 million followers who comprise around 15% of all Muslims worldwide...
Jalil Roshandel (2011). Iran, Israel and the United States. Praeger Security International. p. 15. ISBN9780313386985. The majority of the world's Islamic population, which is Sunni, accounts for over 75 percent of the Islamic population; the other 10 to 20 percent is Shia.
^"Region: Middle East-North Africa". The Future of the Global Muslim Population. Pew Research Center. 27 January 2011. Archived from the original on 25 July 2013. Retrieved 22 December 2011.
^"Region: Sub-Saharan Africa". The Future of the Global Muslim Population. Pew Research Center. 27 January 2011. Archived from the original on 9 March 2013. Retrieved 22 December 2011.
^Vellturo, Madeline (May 2021). "FACTSHEET: ISLAMISTS IN CENTRAL SAHEL"(PDF). UNITED STATES COMMISSION on INTERNATIONAL RELIGIOUS FREEDOM. Retrieved 26 July 2021.
^"Region: Sub-Saharan Africa". Pew Research Center's Religion & Public Life Project. 27 January 2011. Retrieved 15 November 2022.
^"Muslims". Pew Research Center's Religion & Public Life Project. 18 December 2012. Retrieved 13 October 2016.
^"Muslim-Majority Countries". The Future of the Global Muslim Population. Pew Research Center. 27 January 2011. Archived from the original on 25 December 2018. Retrieved 22 December 2011.
^"Region: Asia-Pacific". The Future of the Global Muslim Population. Pew Research Center. 27 January 2011. Archived from the original on 24 December 2018. Retrieved 22 December 2011.