Today, Jan. 16, is designated for holidays honoring the Rev. Martin Luther King Jr. and World Religion Day. Here are some statistics about religion around the globe.

IMPORTANCE OF RELIGION

A Gallup poll tracking Americans and religion saw a slight uptick in those who consider themselves religious in 2021.

MAJORITY RELIGION BY COUNTRY

Data for maps compiled by the Pew Research Center’s Forum on Religion and Public Life in December 2012 indicate:

GROWTH PROJECTIONS

The percentage of people in the world who consider themselves religious is about 63%. The percentage who consider themselves atheists (mostly in China) is about 11%.

Sources: The Future of World Religions; population growth projections, 2010-2050; International Institute for Applied Systems Analysis

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