Dataset of Global Religious Composition Estimates for 2010 and 2020

This dataset describes the world’s religious makeup in 2020 and 2010. We focus on seven categories: Christians, Muslims, Hindus, Buddhists, Jews, people who belong to other religions, and those who are religiously unaffiliated. This analysis is based on more than 2,700 sources of data, including national censuses, large-scale demographic surveys, general population surveys and population registers. For more information about this data, see the associated Pew Research Center report "How the Global Religious Landscape Changed From 2010 to 2020." Updated on Feb. 12, 2026: We updated this dataset to include a Religious Diversity Index score, religious diversity level and religious diversity rank for each country and territory studied. These religious diversity statistics are calculated using the distribution of the seven religious categories mentioned above.