Islamic World Map: Muslim Population, Majorities and OIC

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Dataset updated August 31, 2026. Cite the resource page and include this update date.

Citation URL: https://themuslimpost.org/resources/islamic-world-map

Why “Islamic world map” has four different meanings

A demographic share map colors each country by the percentage of residents who identify as Muslim. It is useful for finding majority and minority patterns, but a small country with a very high share can look more prominent than a large country containing tens of millions of Muslims. An absolute-number map does the reverse: it shows where the largest Muslim populations live, but can make minority communities in very populous countries look like majorities. A Muslim-majority map uses a threshold, usually more than 50%. An OIC map shows membership in an intergovernmental organization. None of these automatically maps Islamic law, religious practice, ethnicity, language, political preference or historical empire. The first question before reading any map is therefore not “what color is this country?” but “what variable is being colored, for what year, from which dataset?” A map without a legend, reference year and source is an illustration, not evidence.

The 2020 global baseline and why it is still the right comparison

Pew’s 2025 publication reconstructs religious composition for 2010 and 2020 across 201 countries and territories using more than 2,700 censuses and surveys, administrative records and population estimates. The country totals are aligned with the United Nations World Population Prospects 2024 revision. This gives editors a consistent global baseline even though the underlying observations differ by country and some estimates require modeling. The year “2020” matters. It describes the reference date of the estimate, not the publication date. Adding the latest national population total to an old religious percentage may produce a rough projection, but it is not a measured 2026 religious count. Migration, births, deaths, changing survey responses and census revisions can all move the result. This page therefore uses 2020 for globally comparable rankings and labels later figures as projections only when a source explicitly models them.

How to use the numbers

Religious-demographic data is estimated from censuses, surveys and demographic models. Treat exact country counts as approximate, compare sources when precision matters, and prefer update dates over undated viral maps.

• For global trend questions, start with Pew Research Center because it documents religious composition by country and decade.
• For current quick estimates by country, use a current ranking table but check whether it explains ranges and uncertainty.
• For membership questions, use the OIC member-state list rather than a demographic table.

Where the world’s Muslims live

Asia-Pacific contained roughly 1.2 billion Muslims in 2020, far more than any other region. The Middle East and North Africa contained about 414 million, and sub-Saharan Africa about 369 million. Europe and North America had much smaller shares of the global total, but they include important and internally diverse communities. Regional labels are analytical containers; they should not be mistaken for religious borders. The country ranking makes the same point. Pew estimates approximately 239 million Muslims in Indonesia, 227 million in Pakistan, 213 million in India, 151 million in Bangladesh and 120 million in Nigeria. India was not Muslim-majority, yet it had the world’s third-largest Muslim population. Six of the ten largest national Muslim populations were in Asia, and the ten largest together contained about 65% of all Muslims.

Absolute population versus percentage share

Consider India and a smaller Muslim-majority state. India’s Muslim share was a minority, but its total Muslim population exceeded that of almost every Muslim-majority country. Conversely, a country can be more than 95% Muslim and still contain fewer Muslims than a single Indian state. A choropleth map based on percentage will emphasize the second case; a proportional-symbol map based on people will emphasize the first. Neither is wrong, but each suppresses information the other reveals. A responsible interactive map should allow the user to switch between at least three values: Muslim population, Muslim share of country population, and change since the previous reference year. If only one value is displayed, the caption should state the omitted dimension.

Muslim-majority countries are not the same as OIC members

Pew counted 53 countries and territories with Muslim majorities in 2020. The OIC’s official list contains 57 member states. The totals differ because one is a demographic classification and the other is an institutional membership list created through diplomacy and the organization’s rules. OIC members retain sovereignty under the organization’s charter; the OIC is not a single state, a religious census bureau or a borderless political union. Several countries outside the OIC contain large Muslim minorities, while an institutional map can include states whose population profile does not fit a simple “Muslim-majority” label. For questions about diplomacy, voting and official cooperation, use the OIC layer. For questions about people, use a demographic dataset. Do not infer the political preferences of residents from either layer.

Why the Middle East-centered map is misleading

Arabic is central to Islamic scripture and the Middle East contains Mecca, Medina and many historic centers of scholarship. That religious and historical importance often shapes visual imagination. Demographically, however, only about one-fifth of Muslims lived in the Middle East and North Africa in 2020. The largest national communities were concentrated in South and Southeast Asia, and rapid growth gave sub-Saharan Africa increasing weight. “Arab,” “Muslim” and “Middle Eastern” are therefore not synonyms. Many Arabs are Christian or follow other traditions; most Muslims are not Arabs; and millions of Muslims live far beyond conventional Middle East boundaries. A useful map teaches these distinctions instead of flattening them.

What drove Muslim population growth from 2010 to 2020

Pew estimates that the Muslim population increased by about 347 million, or 21%, during the decade, faster than every other major religious group. The main explanation is demographic: Muslims had a younger age structure and higher fertility on average than non-Muslims. Changes caused by switching religion had relatively little effect on the global total. Migration mattered greatly for the composition of individual countries and regions, especially Europe and North America, but migration moves people; it does not by itself change the worldwide Muslim count. This distinction prevents a common misuse of the phrase “fastest-growing religion.” It does not mean that 347 million people converted to Islam. It describes net population change produced mostly by births and deaths in a young population, combined with migration and smaller identity changes.

How the estimates are built

No organization conducts one simultaneous global religion census. Researchers combine censuses, large household surveys, registration data and demographic models. Some states ask religion directly; others do not. Response categories may measure affiliation, upbringing, belief or legal identity. Refugees, undocumented migrants, conflict zones and small minorities are harder to count. Country estimates can therefore have different margins of uncertainty even when displayed in one clean table. Pew’s dataset documents its input sources and harmonization rules, while UN World Population Prospects supplies consistent population denominators. The resulting estimates are more comparable than a collage of unrelated web percentages, but “comparable” does not mean exact to the last person. Rounding about 2.0 billion is more honest than presenting false precision.

Territories, disputed borders and regional definitions

Maps also encode political decisions. Whether a territory is listed separately, which boundaries are drawn, and how refugees are assigned can change totals without any person changing religion. Region labels such as “Middle East and North Africa” vary across institutions. Readers comparing two maps should first check whether they cover the same country and territory set. For disputed areas, the safest editorial practice is to reproduce the source’s geographic unit, label it clearly and avoid implying that a demographic estimate settles sovereignty. Population data and recognition of borders are different questions.

How to evaluate an online Islamic world map

• Find the reference year, not merely the webpage update date.
• Check whether the measure is percentage, people, majority status or OIC membership.
• Open the underlying country table and methodology.
• Look for treatment of territories, missing countries and uncertain estimates.
• Do not combine a current population denominator with an old religion share without labeling the result a projection.
• Do not infer law, religiosity, ethnicity or political support from demographic identity.

Largest Muslim populations by country

Approximate 2026 public estimates. Counts are rounded, and some countries have wide uncertainty ranges.

Key figures at a glance

These figures use the latest globally comparable 2020 baseline and should not be relabeled as a live 2026 census.

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