Explore how adults in the U.S. and 35 other countries compare religiously and spiritually when it comes to affiliation, prayer, afterlife beliefs and more.
Christians remain the largest religious group, and Muslims grew the fastest from 2010 to 2020. Read how the global share of Buddhists, Hindus, Jews and the religiously unaffiliated changed.
Find how many people identify with each religious group and what percent each made up in 201 countries and territories, and by region, in 2010 and 2020.
In many places surveyed, 20% or more of all adults have left their childhood religious group. Christianity and Buddhism have had especially large losses.