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Mapped: The World’s Major Religions

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Map of the religious composition around the world

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Religious Composition of Countries

The world has become increasingly more secular in the last few decades. However, religion remains an integral part of many people’s lives, and 84% of the world’s population identifies with a religious group.

The religious profile of the world is rapidly changing, driven primarily by differences in fertility rates and the size of youth populations among the world’s major religions, as well as by people switching faiths.

With the help of data from Pew Research Center, we break down the religious composition of the major religions in countries worldwide.

Religious Makeup of the World by Major Religions

Determining the exact number of religions across the world is a daunting task. Many religions can be difficult to categorize or to tell apart for those not intimately familiar with their doctrine.

Pew Research Center organizes the world’s religions into seven major categories, which includes five major religions (Christianity, Islam, Buddhism, Hinduism, and Judaism), one category that broadly includes all Folk/Traditional religions, and an unaffiliated category.

Globally, Christianity has the largest following of these categories. Around 31% of the world’s population are Christians, closely followed by Muslims at 25%. Jews have the smallest population of major religions, with only 0.2% of the world identifying as Jewish.

Let’s take a look at the religious composition of the world when accounting for regions:

RegionChristiansMuslimsUnaffiliatedHindusJewsBuddhistsFolk
North America74.6%1.3%19.2%0.8%1.6%1.2%0.4%
Latin America-Caribbean89.7%0.1%8.0%0.1%0.1%0.1%1.8%
Europe72.2%6.8%20.0%0.2%0.2%0.2%0.1%
Middle East-North Africa3.6%93.1%0.6%0.6%1.6%0.2%0.3%
Sub-Saharan Africa62.0%31.4%3.0%0.2%0.1%0.1%3.2%
Asia-Pacific7.2%25.7%20.0%26.0%0.1%11.3%8.6%
World31.0%25.0%15.6%15.2%0.2%6.6%5.6%

From Islam being the dominant religion in the Middle East to over 95% of Cambodians and Thais following Buddhism, here’s how prevalent every major religion in the world is.

Christianity

The world’s largest religion, Christianity, is practiced by about 2.4 billion people.

The country with the highest number of practicing Christians is the United States, with a Christian population of 253 million. Brazil and Mexico follow closely with 185 million and 118 million Christians, respectively.

Map of the composition of Christianity around the world

Christianity has historically spread around the globe and today it remains a geographically widespread religion. Over the past century, it has become less concentrated in Europe while becoming more evenly distributed throughout the Americas, sub-Saharan Africa, and the Asia-Pacific region.

Islam

Even though it’s the predominant religion of countries in the Middle East and Northern Africa, by sheer number, countries in Asia have the highest percentage of practicing Muslims in the world.

It may surprise you to know that 14.2% of Indians are Muslim. As a result, the country is home to one of the world’s largest Muslim populations, surpassed only by Indonesia.

Map of the composition of Islam around the world

Islam is also the world’s fastest-growing major religion. The number of Muslims is expected to increase by 70%, from 1.8 billion in 2015 to nearly 3 billion in 2060. The fact that they have the youngest median age, at 24, also helps this population growth.

Judaism

While Jews historically have been found all around the globe, Judaism is highly geographically concentrated today. More than four-fifths of all Jews live in just two countries: the United States and Israel. Israel is the only country with a Jewish majority, with 76% of the population being practicing Jews.

Map of the composition of Judaism around the world

The largest remaining shares of the global Jewish population apart from the U.S. and Israel are in Canada (about 3% of the country’s population), France (2%), the United Kingdom (2%), Germany (2%), Russia (2%) and Argentina (between 1% and 2%).

Unaffiliated

The religiously unaffiliated population includes atheists, agnostics, and people who do not identify with any particular religion. 720 million of the Chinese population consider themselves religiously unaffiliated, while 78% of Czechs feel the same way.

Map of the composition of Unaffiliated around the world

However, it is worth noting that many of the religiously unaffiliated hold some religious or spiritual beliefs. For example, surveys have found that faith in God or a higher power is shared by 7% of unaffiliated Chinese adults, 30% of unaffiliated French adults, and 68% of unaffiliated U.S. adults.

Hinduism

Hinduism is the third-largest religion worldwide, with approximately 1.2 billion Hindus in many countries. Interestingly, however, Hinduism is the dominant religion in only three countries, India with 79%, Nepal with 80%, and Mauritius with 48%.

Map of the composition of Hinduism around the world

Although Hinduism is rarely a country’s primary religion, it still enjoys a global presence. Many regions around the world support significant populations of Hindus, including the Caribbean, Southeast Asia, North America, and South America.

Buddhism

According to estimates, half the world’s Buddhists live in China. Still, they make up only 18% of the country’s population. Most of the rest of the world’s Buddhists live in East and South Asia, including 13% in Thailand (where 93% of the population is Buddhist).

Map of the composition of Buddhism around the world

Buddhism in Asia is a matter of both identity and practice. Scholars and journalists have documented that many Asian countries may engage in Buddhist practices without considering themselves part of any organized religion.

Folk Religion

Folk religion is any ethnic or cultural religious practice that falls outside the doctrine of organized religion. Grounded on popular beliefs and sometimes called popular or vernacular religion, the term refers to how people experience and practice religion in their daily lives.

Map of the composition of Folk Religion around the world

As of 2020, an estimated 429 million people, about 6% of the world’s total population, were adherents of folk or traditional religions. Some notable folk religions include African traditional religions, Chinese folk religions, Native American religions, and Australian aboriginal religions.

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Mapped: What Did the World Look Like in the Last Ice Age?

A map of the Earth 20,000 years ago, at the peak of the last ice age, when colder temperatures transformed the planet we know so well.

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A map of the Earth 20,000 years ago, at the peak of the last ice age, when colder temperatures transformed the planet we know so well.

What Did the World Look Like in the Last Ice Age?

What did the world look like during the last ice age? Was it all endless glaciers and frozen ice? The answer is a partial yes—with some interesting caveats.

The Last Glacial Maximum (LGM), colloquially called the last ice age, was a period in Earth’s history that occurred roughly 26,000 to 19,000 years ago.

This map by cartographer Perrin Remonté offers a snapshot of the Earth from that time, using data of past sea levels and glaciers from research published in 2009, 2014, and 2021, alongside modern-day topographical data.

Let’s dive into the differences between the two Earths below.

The Last Ice Age: Low Seas, Exposed Landmasses

During an ice age, sea levels fall as ocean water that evaporates is stored on land on a large scale (ice sheets, ice caps, glaciers) instead of returning to the ocean.

Earth's Ice Cover20,000 Years AgoToday
Surface8%3%
Land25%11%

At the time of the LGM, the climate was cold and dry with temperatures that were 6 °C (11 °F) lower on average. Water levels in the ocean were more than 400 feet below what they are now, exposing large areas of the continental shelf.

In the map above, these areas are represented as the gray, dry land most noticeable in a few big patches in Southeast Asia and between Russia and Alaska. Here are a few examples of regions of dry land from 20,000 years ago that are now under water:

  • A “lost continent” called Sundaland, a southeastern extension of Asia which forms the island regions of Indonesia today. Some scholars see a connection with this location and the mythical site of Atlantis, though there are many other theories.
  • The Bering land bridge, now a strait, connecting Asia and North America. It is central to the theory explaining how ancient humans crossed between the two continents.
  • Another land bridge connected the island of Great Britain with the rest of continental Europe. The island of Ireland is in turn connected to Great Britain by a giant ice sheet.
  • In Japan, the low water level made the Sea of Japan a lake, and a land bridge connected the region to the Asian mainland. The Yellow Sea—famous as a modern-day fishing location—was completely dry.

The cold temperatures also caused the polar parts of continents to be covered by massive ice sheets, with glaciers forming in mountainous areas.

Flora and Fauna in the Last Ice Age

The dry climate during the last ice age brought about the expansion of deserts and the disappearance of rivers, but some areas saw increased precipitation from falling temperatures.

Most of Canada and Northern Europe was covered with large ice sheets. The U.S. was a mix of ice sheets, alpine deserts, snow forests, semi-arid scrubland and temperate grasslands. Areas that are deserts today—like the Mojave—were filled with lakes. The Great Salt Lake in Utah is a remnant from this time.

Africa had a mix of grasslands in its southern half and deserts in the north—the Sahara Desert existed then as well—and Asia was a mix of tropical deserts in the west, alpine deserts in China, and grasslands in the Indian subcontinent.

Several large animals like the woolly mammoth, the mastodon, the giant beaver, and the saber-toothed tiger roamed the world in extremely harsh conditions, but sadly all are extinct today.

However, not all megafauna from the LGM disappeared forever; many species are still alive, including the Bactrian camel, the tapir, the musk ox, and the white rhinoceros—though the latter is now an endangered species.

Will There Be Another Ice Age?

In a technical sense, we’re still in an “ice age” called the Quaternary Glaciation, which began about 2.6 million years ago. That’s because a permanent ice sheet has existed for the entire time, the Antarctic, which makes geologists call this entire period an ice age.

We are currently in a relatively warmer part of that ice age, described as an interglacial period, which began 11,700 years ago. This geological epoch is known as the Holocene.

Over billions of years, the Earth has experienced numerous glacial and interglacial periods and has had five major ice ages:

Major Ice AgesNameTime Period (Years Ago)
1Huronian Glaciation2.4 billion - 2.1 billion
2Cryogenian Glaciation720 million - 635 million
3Andean-Saharan Glaciation450 million - 420 million
4Late Paleozoic ice age335 million - 260 million
5Quaternary Glaciation2.6 million - present

It is predicted that temperatures will fall again in a few thousand years, leading to expansion of ice sheets. However there are a dizzying array of factors that are still not understood well enough to say comprehensively what causes (or ends) ice ages.

A popular explanation says the degree of the Earth’s axial tilt, its wobble, and its orbital shape, are the main factors heralding the start and end of this phenomenon.

The variations in all three lead to a change in how much prolonged sunlight parts of the world receive, which in turn can cause the creation or melting of ice sheets. But these take thousands of years to coincide and cause a significant change in climate.

Furthermore, current industrial activities have warmed the climate considerably and may in fact delay the next ice age by 50,000-100,000 years.

Still on a history kick? Check out Mapped: The Ancient Seven Wonders of the World that captivated people for thousands of years.
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