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.
Majorities want the church to allow use of birth control and IVF, and to permit priests to bless same-sex couples. But views differ by Mass attendance.