What Is The Population Of The World 2024 By Religion. Buddhism has 507 million followers, which is 6.6% of the global population 1. It is estimated that as many as 506 million people around the world practice buddhism as a religion, which would represent roughly 6.6% of the world’s total population.

Only about a quarter (27%). The only world religion forecasted to experience a decline in adherents up until 2050 is buddhism, due to demographic developments such as aging populations.