Most Christian Countries 2019

Christianity is the largest religion in the world. According to data from 2015, there are more than 2.3 billion people that practice some form of Christianity. This means that about one-third of the world’s total population follows this religion.

Christianity has several denominations, but the largest is the Catholic Church. There are about 1.2 billion people that are Catholic. Additional large denominations include Protestantism and the Eastern Orthodox Church.

In Europe, Russia, North America, South America, parts of Africa, East Timor, the Philippines, and Oceania, Christianity is the predominant religion. However, Christianity is also practiced on a smaller scale in regions including the Middle East and Indonesia. In 15 nations, Christianity has been deemed the state religion. These nations include England, Greece, and Iceland.

In terms of how many Christians reside in a nation, the United States leads the pack with approximately 230 million. Brazil also has a high number of Christians – over 180 million to be exact. Additional nations that have a large number of Christians include:

In terms of percentages of Christians when compared to a nation’s population as a whole, East Timor comes out on top. Of its over 1.1 million residents, approximately 99.1% are Christian. In American Samoa, over 98% of its 70,000 residents practice Christianity. Additional nations with high percentages of Christians in relation to total population include:

Rank Flag Name Population 2019 Area Area (mi²) % of Earth's Area Growth Rate Region Subregion
1Romania19,364,557238,391 km²92,019 mi²0.16%-0.73%EuropeEastern Europe
2Zambia17,861,030752,612 km²290,508 mi²0.51%2.94%AfricaEastern Africa
3Haiti11,263,07727,750 km²10,712 mi²< 0.1%1.26%AmericasCaribbean
4Greece10,473,455131,990 km²50,948 mi²< 0.1%-0.46%EuropeSouthern Europe
5Papua New Guinea8,776,109462,840 km²178,656 mi²0.31%1.97%OceaniaMelanesia
6Paraguay7,044,636406,752 km²157,006 mi²0.27%1.27%AmericasSouth America
7Armenia2,957,73129,743 km²11,481 mi²< 0.1%0.20%AsiaWestern Asia
8Puerto Rico2,933,4088,870 km²3,424 mi²< 0.1%-3.49%AmericasCaribbean
9Grenada112,003344 km²133 mi²< 0.1%0.49%AmericasCaribbean
10Greenland56,6722,166,086 km²836,109 mi²1.46%0.19%AmericasNorthern America