Christianity Adherents

Definition: Christianity Adherents
2.2 billion

Christianity has about 2.2 billion adherents worldwide. This number is based on global surveys and estimates of 2.17 and 2.18 billion from 2010-11, rounded up a bit to correspond with increases in world population since then.

Christian population statistics count all those who identify themselves as "Christian," which includes Catholics, Orthodox Christians, Anglicans, Protestants, non-denominational Christians, Mormons, Jehovah's Witnesses, and many other groups.


  1. The Global Religious Landscape.” Pew Research Center on Religion & Public Life. 18 December 2012.
  2. Christianity.” Encyclopaedia Britannica Online. "Geographically the most widely diffused of all faiths, it has a constituency of more than 2 billion believers."
  3. People and Society: World.” CIA World Factbook. 2.17 billion in 2010 (31.4% of 6.9 billion) "Christian 31.4% (2010 est.)"
  4. The Global Religious Landscape: Christians.” Pew Research Center on Religion & Public Life. 18 December 2012.
  5. Global Christianity – A Report on the Size and Distribution of the World’s Christian Population.” Pew Research Center on Religion & Public Life. 19 December 2011. "World Total [December 2011]: 2,184,060,000"

Further Reading


Article Info

Title Christianity Adherents
Last UpdatedFebruary 2, 2021
MLA Citation “Christianity Adherents.” 2 Feb. 2021. Web. Accessed 16 Jan. 2022. <>