World Population Religion Wise 2024. According to a demographic study based on analysis of more than 3,000 censuses, surveys, and population registers, christianity remains the world’s largest. Christianity remains the world’s largest religion in 2024, with almost 2.4 billion adherents.

This is an increase of 1.25 % (100,752,651 people) compared to population of 8,046,949,318. Christianity remains the world’s largest religion in 2024, with almost 2.4 billion adherents.