Countries with Largest Christian Population in the World

There are many countries with largest Christian population in the world and the list is endless. Christianity had approximately 2.4 billion adherents and is the largest-religion by population respectively.

According to a PEW estimation in 2020, Christians made up to 2.4 billion of the worldwide population of about 8 billion people. It represents nearly one-third of the world’s population and is the largest religion in the world, with the three largest groups of Christians being the Catholic Church, Protestantism, and the Eastern Orthodox Church.

The largest Christian denomination is the Catholic Church, with 1.3 billion baptized members. Christianity is the predominant religion and faith in Europe (including Russia), the Americas, the Philippines, East Timor, Sub-Saharan Africa, and Oceania.

There are also large Christian communities in other parts of the world, such as Indonesia, Central Asia, the Middle East, and West Africa where Christianity is the second-largest religion after Islam. The United States has the largest Christian population in the world, followed by Brazil, Mexico, Russia, and the Philippines.

Christianity is the most widely practiced religion in the world, with some 2.4 billion followers — one-third of the global population. The Catholic church alone has 1.09 billion followers.

Countries with Largest Christian Population in the World

The total number of countries with largest Christian population in the world is based on the number of people who are members of a Christian denomination or who identify themselves as Christian, plus their children. The number of people who actually believe in God or who regularly attend church is not addressed. People who mix Christianity with tribal religions are counted as Christians in this article.

El Salvador

We’ll start with El Salvador, where the population is 81.9 percent Christian.


Ukraine’s population is 81.9 percent Christian. Most belong to a branch of the Orthodox church.


Swaziland’s population is 82.7 percent Christian.

Eighty-three percent of the population of Costa Rica is Christian, primarily Catholic.

Dominican Republic

Eighty-three percent of the Dominican Republic is Christian, primarily Catholic.


Italy’s population is 83 percent Christian More than 81 percent of the population is Catholic.


Ireland’s population is 83.8 percent Christian. More than three-quarters of residents in the Republic of Ireland identify as Catholic, while in Northern Ireland, the 2011 census found 48 percent of the population identifies as either Protestant or brought up Protestant and 45 percent as Catholic or brought up Catholic.


Portugal’s population is 84.3 percent Christian, and 81 percent Catholic.

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The population of Liechtenstein is 84.4 percent Christian, and nearly 76 percent Catholic.


Nicaragua’s population is 84.6 percent Christian, Nearly 60 percent of the population is Catholic.


Eighty-five percent of Bulgaria’s population is Christian. Most belong to the Eastern Orthodox Church.


Eighty-five percent of the population of the Philippines is Christian and 80 percent is Catholic.

Kenya’s population is 85.1 percent Christian. Protestant denominations, including the Anglican Church of Kenya, have the largest membership.


Liberia’s population is 85.5 percent Christian.

Cook Islands

The population of the Cook Islands in the South Pacific is 86 percent Christian.


Monaco’s population is also 86 percent Christian.


Eighty-six percent of the population of the Bahamas is Christian.


Argentina’s population is 86 percent Christian, and 71 percent Catholic.

Here, priest Juan Gabriel Arias shows a tattoo depicting Christ holding the Racing Football Club shield at the church Natividad de Maria in Buenos Aires. The priest became member of the executive committee of the Racing Club after getting permission from Cardinal Jorge Bergoglio, now Pope Francis.


Eighty-seven percent of Zimbabwe’s population is Christian.


Eighty-seven percent of the population of Guatemala is Christian; 77 percent of the population is Catholic.


Eighty-eight percent of Aruba’s population is Christian, the vast majority Catholic.


Eighty-eight percent of Gabon’s population is Christian.


Eighty-eight percent of the population of Honduras is Christian.


Eighty-eight percent of Venezuela’s population is Christian, and 71 percent of the population is Catholic.

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