
Christianity remains the world’s largest religion, with an estimated 2.2 billion followers in 2025 spread across many countries. That means nearly one in every four people alive today is a Christian.
But where are the world’s Christians found? While the faith began in the Middle East over 2,000 years ago, today its largest communities are spread across the Americas, Africa, Europe, and Asia—shaped by centuries of migration, colonization, cultural exchange, and conversion.
The visualization of Christian populations shows how demographic shifts are redefining global Christianity. For instance, while Western nations like the U.S. remain influential, rapid population growth in Africa and parts of Asia is pushing Christianity’s center of gravity southward.
POPULATION OF WORLD RELIGIONS
Christianity (2.38 billion)
Islam (1.91 billion)
Unaffiliated (1.19 billion)
Hinduism (1.16 billion)
Buddhism (507 million)
Sikhism (26 million)^
Judaism (14.6 million)
-Jainism (4.5 million)*
Folk Religions (430 million)
- Other Religions (61 million)