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Islam Emerges as the World’s Fastest-Growing Religion, New Pew Study Finds

Image Credentials: Image Title: Islam Emerges as the World’s Fastest-Growing Religion, New Pew Study Finds  Source: (sora.chatgpt) Date: May 2025 Attribution: Created by AI-generated imagery (sora.chatgpt), and it does not depict a real-world scene.

📍GLOBAL FAITH SHIFT | SPECIAL REPORT

Christianity remains the largest, but sees global decline as religious ‘nones’ surge

By Open Chronicle Staff | June 9, 2025

A sweeping new demographic study released by the Pew Research Center has confirmed a dramatic reshaping of global religious affiliation between 2010 and 2020. Islam has emerged as the world’s fastest-growing religion, outpacing all other faiths due to robust population growth in key regions, while Christianity, though still the largest religion globally, has seen its proportion of the world population decline.

The Pew Global Religious Landscape Study, published Monday, offers a detailed statistical snapshot of religious affiliation across 201 countries, drawing on over 2,700 data sources including national censuses, population surveys, and demographic registers. The study includes a focused analysis on major world religions — Christianity, Islam, Hinduism, Buddhism, Judaism — as well as the fast-growing group of the religiously unaffiliated, also known as “nones.”

🔹 Islam’s Ascendancy Driven by Fertility and Youth

Muslims added 347 million people over the 10 years, a growth greater than all other religious groups combined. According to Pew, this growth is primarily driven by high birth rates and a younger population age structure, especially in regions like sub-Saharan Africa, the Middle East-North Africa, and the Asia-Pacific — now home to the world’s largest Muslim population.

“Muslims are having children at a greater number than Muslims are dying,” said Conrad Hackett, senior demographer at Pew, emphasizing that conversion played little role in Islam’s demographic growth. In contrast to the West, where religious switching plays a dominant role in shaping religious affiliation, Muslim-majority countries show remarkable continuity in religious identity.

🔹 Christianity Holds the Majority — For Now

Despite remaining the world’s largest religious group at 29% of the global population, Christianity has shrunk from 31% in 2010, with declines most notable in the U.S., Europe, Canada, and Australia. The decline is primarily attributed to low fertility, aging populations, and the exodus of believers turning unaffiliated — a trend amplified by secularization in Western nations.

Europe, once the cradle of global Christianity, now accounts for only 22.3% of the world’s Christian population. Meanwhile, sub-Saharan Africa has emerged as Christianity’s new demographic heartland, with one-third of all Christians now living on the continent.

In the U.S., the Christian population fell from 78.3% to 64% over the study period. In countries like France, the UK, Uruguay, and Australia, Christians now constitute less than half the population.

🔹 The Rise of the Religiously Unaffiliated

Perhaps the most dramatic shift is seen in the growth of the religiously unaffiliated — the third-largest group globally. Now comprising 24% of the global population, “nones” include atheists, agnostics, and those who claim no religion. Their growth is driven almost entirely by religious disaffiliation, especially in Western democracies.

For every one adult raised without religion who converts to a faith, 3.2 adults leave the religion in which they were raised, according to Pew’s religious switching data — a first for the study. The highest proportions of “nones” are found in China (67% of the global unaffiliated), Europe, and North America.

🔹 Other Faith Groups: Mixed Trends

  • Hindus (14.9% of the global population) saw regional growth in North America (55%) and the Middle East-North Africa (62%), largely due to migration. The vast majority (95%) still reside in India.

  • Buddhists experienced the only absolute decline, falling by 19 million worldwide, largely due to aging populations and disaffiliation in East Asia.

  • Jews, the smallest religious group studied (0.2% of the global population), saw a 6% increase, with Israel home to nearly 46% of the world’s Jewish population. Migration and broader cultural identification have shaped this community’s dynamics.

🔹 Migration: A Religious Shaper

In Gulf nations such as Qatar, Saudi Arabia, and the UAE, migration has significantly reshaped religious demographics, increasing the number of non-Muslims, particularly Hindus and Christians, due to an influx of foreign laborers.

🔹 Looking Ahead: A World in Transition

While Christianity remains the most geographically widespread faith, Islam’s concentrated growth and youth-heavy demographic give it strong momentum into the future. Meanwhile, the accelerating disaffiliation in the West signals an ongoing cultural and spiritual realignment in modern societies.

“This report doesn’t just tell us who believes what,” said Hackett. “It tells us who’s shaping the spiritual face of the 21st century.”


📰 Key Global Religious Stats (2010–2020)

  • Muslims: +347 million (Fastest growing)

  • Christians: 29% of global population (Down from 31%)

  • Religiously Unaffiliated: 24% of population (Up sharply in West)

  • Hindus: 14.9% of global population

  • Buddhists: -19 million (Only faith to decline)

  • Jews: ~15 million (0.2% of world population)

🔍 Source: Pew Research Center – Global Religious Landscape Study (2025 Edition)

For full interactive data, visit pewforum.org
© Open Chronicle, 2025

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