Real data on Christianity's global spread, unreached peoples, and the remaining task. Every number on this page is sourced from peer-reviewed research.
Click any country to see details. Colors indicate estimated Christian population as a percentage of total.
Countries with the most Christians by absolute numbers (Pew Research Center, 2024 estimates).
| Rank | Country | Christian Population | % of Country | Primary Tradition |
|---|---|---|---|---|
| 1 | United States | 230 million | 68.5% | Protestant / Catholic |
| 2 | Brazil | 185 million | 86.2% | Catholic / Pentecostal |
| 3 | Mexico | 118 million | 89.7% | Catholic |
| 4 | Philippines | 100 million | 89.5% | Catholic |
| 5 | Nigeria | 95 million | 43.7% | Protestant / Catholic |
| 6 | DR Congo | 74 million | 74.5% | Catholic / Protestant |
| 7 | Ethiopia | 67 million | 54.8% | Orthodox |
| 8 | Russia | 64 million | 44.1% | Orthodox |
Source: Pew Research Center, "Global Religious Landscape" (2024 update). Figures are estimates.
Christianity is growing rapidly in the Global South while declining as a share of population in Europe and North America.
The fastest-growing Christian population globally. From 9 million in 1910 to over 700 million today. Projected to reach 1.1 billion by 2050.
Pew Research Center, 2024
Significant growth in China, South Korea, Philippines, and India. China may have 100–130 million Christians, though precise data is difficult to confirm.
Pew Research Center; World Christian Database
Remains overwhelmingly Christian (~90%), but the composition is shifting rapidly from Catholic to Protestant/Pentecostal, especially in Brazil, Guatemala, and Chile.
Pew Research Center, 2024
Christian share declining: from 95% in 1910 to roughly 73% today. Church attendance significantly lower than nominal affiliation. Secularization accelerating in Western Europe.
Pew Research Center, 2024
Declining as a share of population: from ~90% in 1970 to ~68% today. The "nones" (religiously unaffiliated) are the fastest-growing group in the US and Canada.
Pew Research Center, 2024
Small but persistent Christian presence (~4%). Ancient communities in Egypt (Copts, ~10% of population), Lebanon, Iraq, and Syria face significant challenges.
Pew Research Center; Joshua Project
Of 17,446 documented people groups worldwide, 7,407 (42.5%) are considered "unreached" — meaning less than 2% evangelical Christian and less than 5% total Christian adherents.
The area between 10 and 40 degrees north latitude, stretching from North Africa through the Middle East to East Asia, contains the highest concentration of unreached people groups on earth. This region includes most of the world's Muslim, Hindu, and Buddhist populations. An estimated 3.2 billion people in the 10/40 Window have limited or no access to the Christian gospel.
Countries of particular focus: India, China, Pakistan, Bangladesh, Nepal, Indonesia, Afghanistan, Iran, Iraq, Saudi Arabia, Yemen, North Korea, and the Central Asian republics.
Source: Joshua Project, 2024. "Unreached" defined as <2% evangelical, <5% Christian adherents.
Global Christian population over time, showing the dramatic shift from the Global North to the Global South.
Sources: Pew Research Center; World Christian Database; Atlas of Global Christianity (Edinburgh, 2009). 2024 figures are estimates.
"And this gospel of the kingdom will be preached in the whole world as a testimony to all nations, and then the end will come."— Matthew 24:14 (NIV)
Note on accuracy: All figures are estimates compiled from the best available research. Actual numbers may vary due to differences in methodology, definitions of "Christian," and data collection challenges in certain regions. Country-level percentages shown on the map are approximate and drawn from multiple sources. This page was last updated April 2026.