Major religious groups
In 1780, the word religion shifted from a singular spiritual concept to a plural noun describing multiple systems of worship. John Toland published Nazarenus in that era, framing Judaism, Christianity, and Islam as distinct nations within a single faith. This classification emerged during an age when European scholars sought to rank societies by their level of civility. The goal was not neutral observation but establishing a hierarchy where Western monotheism sat at the top. Modern researchers still struggle with how to count adherents for these groups. Census data varies wildly between countries like the United States and France because neither collects religious information in official counts. Informal traditions remain especially difficult to quantify since they lack centralized organizations or membership rolls.
Christianity claims 2.3 billion followers today according to Pew Research Center estimates from 2010. Islam follows closely behind with its own massive global population spread across Hejaz and beyond. Hinduism traces roots back to the Indian subcontinent between the 20th and 17th centuries BCE yet remains one of the largest living traditions. Buddhism counts approximately 0.3 billion adherents worldwide despite originating in the 5th century BCE. Folk religions account for another 0.2 billion people scattered across regional communities globally. These numbers rely on census reports and surveys rather than direct headcounts from every nation. Methodological disagreements persist about whether to include children or only self-identified adults in final tallies. Some agencies use multiple sources while others pick single best estimates leading to wide variation in results.
Africa hosts tribal peoples whose traditional faiths differ sharply from ancient Egyptian religion classified as Middle Eastern heritage. The Atlantic slave trade transported African diasporic practices to the Americas during the 16th through 18th centuries. Asia contains diverse groups including Chinese folk religions alongside Taoism and Confucianism rooted in the 2nd century CE. Europe maintains strong Christian identities while also hosting significant Muslim populations concentrated in Southwest regions. North America shows high rates of religious diversity due to immigration patterns and new movement growth. South America blends indigenous beliefs with Catholic traditions brought by colonial powers. Oceania preserves unique Austronesian spiritual systems that predate modern organized religion entirely. Each continent displays distinct demographic profiles shaped by historical migration and cultural exchange over millennia.
An 1821 map labeled Christians, Mahometans, and Pagans as levels of civilization without distinguishing Buddhism from Hinduism. Josiah Conder published Analytical and Comparative View of All Religions Now Extant among Mankind in 1838 expanding categories dramatically. His work included Druze, Yazidis, Mandaeans, and Elamites under possibly monotheistic groups while listing Zoroastrianism separately. The Parliament of the World's Religions convened in Chicago in 1893 marking a turning point toward equal treatment of non-Christian faiths. Researchers like William James and Alan Watts received funding through privately funded lectures created after this event. By the latter half of the 20th century scholars began questioning whether world religion categories artificially separated sacred from secular life. Daniel Defoe once defined religion as worship given to God but also applied it to idols and false deities. Language evolved from singular spirituality to plural religions between 1780 and 1810 reflecting changing academic priorities.
At least 3.8 billion people follow Abrahamic religions today spanning Judaism Christianity Islam and related Middle Eastern faiths. These traditions share monotheistic practices named after Hebrew patriarch Abraham according to historical records. The Bahá'í Faith arose in 19th-century Persia within Shia Islamic contexts yet considers itself independent drawing from multiple sources. Druze faith and Samaritanism represent smaller branches with fewer adherents compared to major global movements. Rastafari emerged in Jamaica during the 1930s adding another layer to Abrahamic diversity. Several organizations actively proselytize across regions outside East and Southeast Asia where these groups remain less dominant. Quranic texts categorize believers into Muslims People of the Book and idol worshipers establishing early theological boundaries. Modern scholarship continues debating how best to classify divergent strands like the Bahá'í Faith which may be viewed as either new movement or established tradition depending on perspective.
Hinduism originated in Greater India sharing concepts like dharma karma and reincarnation with neighboring Indian religions. Buddhism spread widely across South Asia East Asia Southeast Asia and isolated parts of Russia since its founding in the 5th century BCE. Jainism developed between the 7th and 9th centuries BCE alongside Sikhism emerging in the 15th century. Taoism utilizes the concept of Tao while Confucianism emphasizes social harmony rooted in Chinese thought from the 6th to 5th century BCE. Vietnamese Korean and Japanese traditions incorporate elements influenced by earlier Chinese religious frameworks. Ravidassia religion separated from Sikhism officially in 2010 reflecting ongoing internal diversification within Indian subcontinent faiths. These Eastern systems maintain strong influence across vast geographic areas despite modern secularization trends affecting urban centers globally.
Wicca counts approximately 800,000 followers worldwide originating in the United Kingdom during 1954 CE. Mormonism emerged in the USA during the 1820s becoming one of the fastest-growing religious movements historically. Spiritism developed in France throughout the 19th century blending Christian mysticism with spiritualist practices. The Unification Church formed in South Korea in 1954 attracting millions primarily through missionary work. Zoroastrianism maintains around 205,000 adherents mostly concentrated in Iran dating back to the 16th to 14th century BCE. Happy Science represents a tiny group with only 13,000 to 38,000 members founded in Japan in 1986. Indigenous ethnic religions persist as undercurrents within major organized faiths or exist independently on every continent. Postwar Shinto continues influencing Japanese culture while traditional African beliefs remain vital in diaspora communities across the Americas.
Common questions
When did the word religion shift from a singular concept to a plural noun?
The word religion shifted from a singular spiritual concept to a plural noun in 1780. John Toland published Nazarenus during that era framing Judaism, Christianity, and Islam as distinct nations within a single faith.
How many followers does Christianity have according to Pew Research Center estimates from 2010?
Christianity claims 2.3 billion followers today according to Pew Research Center estimates from 2010. These numbers rely on census reports and surveys rather than direct headcounts from every nation.
Where are African diasporic practices located after being transported by the Atlantic slave trade?
The Atlantic slave trade transported African diasporic practices to the Americas during the 16th through 18th centuries. Africa hosts tribal peoples whose traditional faiths differ sharply from ancient Egyptian religion classified as Middle Eastern heritage.
What year was the Parliament of the World's Religions convened in Chicago?
The Parliament of the World's Religions convened in Chicago in 1893 marking a turning point toward equal treatment of non-Christian faiths. Researchers like William James and Alan Watts received funding through privately funded lectures created after this event.
When did Ravidassia religion separate from Sikhism officially?
Ravidassia religion separated from Sikhism officially in 2010 reflecting ongoing internal diversification within Indian subcontinent faiths. Hinduism originated in Greater India sharing concepts like dharma karma and reincarnation with neighboring Indian religions.
All sources
85 references cited across the entry
- 2bookThe Invention of World ReligionsTomoko Masuzawa — University of Chicago Press — 2005
- 3bookSacred and Secular, Religion and Politics WorldwidePippa Norris et al. — Cambridge University Press — 2007-01-06
- 4webAmong Wealthy Nations U.S. Stands Alone in its Embrace of ReligionPew Research Center — Pew Research Center — 2002-12-19
- 5webMajor Religions of the World Ranked by Number of Adherentsadherents.com — adherents.com — 2005-08-28
- 6webWorld Values Surveyworldvaluessurvey.org — worldvaluessurvey.org — 2005-06-28
- 7webUnited Nations Statistics Division - Demographic and Social Statisticsunstats.un.org — United Nations Statistics Division — 2007-01-06
- 8webStatus of Global Christianity, 2025, in the Context of 1900 –2050Center for the Study of Global Christianity, Gordon-Conwell Theological Seminary
- 9webChristianity 2015: Religious Diversity and Personal Contactgordonconwell.edu — January 2015
- 11newsWhy Muslims are the world's fastest-growing religious group2017-04-06
- 12webHinduism: Symbols, Beliefs & OriginsHISTORY A&E Television Networks — 2017-10-06
- 13webThe Global Religious LandscapePew Research center — 18 December 2012
- 14webJapan: International Religious Freedom Report 2006Bureau of Democracy, Human Rights, and Labor; U.S. Department of State — 15 September 2006
- 15webJapan
- 16journalPeople's Republic of China: Religions and Churches Statistical Overview 2011Katharina Wenzel-Teuber — 2012
- 17webInside the Voodoo Rituals of Haiti2004-07-07
- 18webSikhismEncyclopædia Britannica
- 19bookEncyclopedia of IslamJuan Eduardo Campo — Infobase — 2009
- 20webAhmadiyya MuslimsPBS — 20 January 2012
- 21bookAsian Religions in British ColumbiaLarry DeVries et al. — University of Columbia Press — January 2011
- 23bookThe Evolving World: Evolution in Everyday LifeDavid P. Mindell — Harvard University Press — 2009
- 25bookThe A to Z of new religious movementsGeorge D. Chryssides — Scarecrow Press — 2006
- 28reportOther ReligionsLuis Lugo et al. — Pew Research Center's Religion & Public Life Project — 2012-12-18
- 29bookThe World's Religions in Figures: An Introduction to International Religious DemographyTodd M. Johnson et al. — Wiley-Blackwell — 2013
- 31webJainismEncyclopædia Britannica
- 34webWhat Are Vietnam's Indigenous Religions?Janet Alison Hoskins — Center for Southeast Asian Studies — February 2012
- 37speechReligion vs Restrictions and PersecutionSergei Blagov — 31 July 1999
- 38web宗教年鑑Agency for Cultural Affairs — 2019
- 39webDruze
- 44webАрена: Атлас религий и национальностейСреда (Sreda) — 2012
- 48webUniversity of Virginia LibraryReligiousmovements.lib.virginia.edu — 2006-09-07
- 49webA Brief History of the Native American ChurchCSP — 1996
- 50webLeaders of Native American Church Pressure Biden Administration for Protections of Peyote HabitatDarren Thompson — 2023-03-03
- 52webZoroastrianism: History, Beliefs, and PracticesHarry Binford
- 54web【アゴラ】八幡 和郎:創価学会や旧統一教会など各宗教の本当の信者数は?2022-11-21
- 55webHow many yamabushi are there? And other questions about yamabushiTim — 2021-04-02
- 56webIl neopaganesimo in ItaliaCESNUR — CESNUR
- 57journalThe Way of the Hearth: Roman Traditionalism in the 21st CenturyChristian Giudice — 2024
- 58webAn Internet Newsletter & Archive Regarding the Samaritan-Israelites2 January 2025
- 60journalEstimating the Religious Composition of All NationsBecky Hsu et al. — 2008-07-09
- 61newsHow many Baháʼís are there?Baháʼí International Community — 1992
- 62bookWorld Christian EncyclopediaDavid A. Barrett — Oxford University Press — 2001
- 63webGlobal adherents of the World's 19 distinct major religionsDavid Barrett et al. — William Carey Library — 2001
- 64newsThe List: The World's Fastest-Growing ReligionsStaff — Carnegie Endowment for International Peace — May 2007
- 65journalRising restrictions on religionBrian J Grim — 2012
- 66bookWorld Christian EncyclopediaDavid B. Barrett — Oxford University Press — 2001
- 67bookSpirituality and psychiatryMohamed Omar Salem et al. — Royal College of Psychiatrists — January 2018
- 69bookWorld Religions in America, Fourth Edition: An IntroductionJacob Neusner — Westminster John Knox Press — 2009-10-07
- 70bookWorld Religions in America, Fourth Edition: An IntroductionJacob Neusner — Westminster John Knox Press — 2009-10-07
- 71bookModern Paganism in World Cultures: Comparative PerspectivesMichael F. Strmiska — ABC-CLIO — 2005
- 72bookPagan Theology: Paganism as a World ReligionMichael York — New York University Press — 2003
- 74web5 Religions with the Most FollowersHoward Steven Friedman Statistician et al. — 2011-04-25
- 75bookWorld ReligionsJeffrey Brodd — Saint Mary's Press — 2003
- 76webThe Abrahamic religionsAnna Sapir Abulafia — British Library — 23 September 2019
- 77encyclopediaYAZIDIS i. GENERALChristine Allison — Columbia University — 20 September 2016
- 78web'This is one of the world's oldest religions, and it is going to die.'Liz Sly — 16 November 2008
- 79bookModern Pagan and Native Faith Movements in Central and Eastern EuropeScott Simpson — Acumen — 2017
- 80bookTwentieth-Century Marxism: A Global IntroductionDaryl Glaser et al. — Routledge — 2007-09-12
- 81bookNazarenus, or, Jewish, gentile, and Mahometan Christianity : containing the history of the antient Gospel of Barnabas, and the modern Gospel of the Mahometans ... also the original plan of Christianity explain'd in the history of the Nazarens ... with the relation of an Irish manuscript of the four Gospels, as likewise a summary of the antient Irish ChristianityJohn Toland et al. — London : J. Brotherton, J. Roberts and A. Dodd — 1718-01-01
- 82bookThe Invention of World Religions: Or, How European Universalism Was Preserved in the Language of PluralismTomoko Masuzawa — University of Chicago Press — 2012-04-26
- 83bookThe Invention of World Religions: Or, How European Universalism Was Preserved in the Language of PluralismTomoko Masuzawa — University of Chicago Press — 2012-04-26
- 84bookThe Invention of World Religions: Or, How European Universalism Was Preserved in the Language of PluralismTomoko Masuzawa — University of Chicago Press — 2012-04-26
- 85bookThe Invention of World Religions: Or, How European Universalism Was Preserved in the Language of PluralismTomoko Masuzawa — University of Chicago Press — 2012-04-26
- 86journalWorld Religions and World OrdersStephen R. L. Clark — 1990