Largest Population In The World 2024 By Religion. The first seven nations listed above have a buddhist population that makes up at least 55% of the total population,. With over 2.38 billion followers, it’s the largest religion in the world.

Christianity is the top religion globally, with about 2.38 billion followers. About pew research center pew research center is a nonpartisan, nonadvocacy fact tank that informs.