Christianity is among the most popular religions by population. According to an PEW estimate for 2025, Christianity comprised 2.38 billion in the population, or nearly one-third of the people. The largest proportion of Christians includes Catholics who have 1.3 billion members who were baptized. The second largest group is Protestantism which has single groups as well as Eastern Orthodox Church in multiple one. Here are a few of the most populous countries that are Christian across the globe.
Top 10 countries in terms of the number of people who use it.
- The United Nations tops the list with 246,790,000 Christian people, which accounts for 79.5 percent in the global population.
- Brazil is ranked second with 175,700,000. Christians comprising 90.2 percent of the world’s total population.
- Mexico is at third place an estimated 780,000 Christian people and 95 percent of the population.
- The fourth place is Russia with 105,220,000 people, 73.6% of the Christian population.
- The Philippines is ranked fifth spot with 86,790,000 Christians which is 93.1 percent of the world’s population.
- Nigeria is ranked sixth, with the sixth position, with a 50.8 percent Christian number of people.
- China is seventh in the world and accounts for 5percent from the Christian population, which is a sum of about 67.070,000. Buddhism is the main religion that is followed by Chinese people.
- Then there’s Congo DR, with 63,150,000 people who follow Christianity and a rate of 95.7 percent.
- The next third Germany with 58,240,000 inhabitants and an % of 70.8.
- South Africa is in the final position, with an estimated 52,886,000 Christians and a share of 85.3 percent in the entire world’s.
Ten countries that have the the highest proportion of Christians. Christianity
| Rank | Country | Number of Christians | % of Christians |
| 1. | Vatican City | 800 people | 100% |
| 2. | Romania | 21,490,000 | 99% |
| 3. | Papua New Guinea | 6,860,000 | 99% |
| 4. | Tonga | 100,000 | 99% |
| 5. | Timor-Leste | 1,120,000 | 99% |
| 6. | Armenia | 3,090,000 | 98.5% |
| 7. | Namibia | 2,280,000 | 97.6% |
| 8. | Marshall Islands | 50,000 | 97.5% |
| 9. | Moldova | 3,570,000 | 97.5% |
| 10. | Solomon Islands | 520,000 | 97.5% |
1. Vatican City
Vatican City is the world’s most compact country, occupying 0.49 sq. km. In the Vatican is the headquarters for the Catholic Church. Most of the people are priests and nuns and the pope is the head of the church.
2. Romania
Romania is a secular country. 73.86 percent of the respondents were identified as Orthodox Christians, with 73.42 percent being members of Romanian Orthodox Church. Romanian Orthodox Church. While the remaining 128,291 individuals, belong to different Christian religions. It is the Romanian Orthodox Church is an autocephalous Eastern Orthodox Church and the third-largest in the world.
3. Papua New Guinea
Christianity was first introduced on 15 September, 1847 when a missionary group of Woodlark Island in New Guinea. New Guinea has a total of 64.3 percent of Protestantism. 26.0 percent Catholicism as well as 5.2 percent other Christian.
4. Tonga
90 percent of the majority people in Tonga are part of Christianity through four church denominations such as
- Accessible Wesleyan Church of Tonga (36%)
- Church of Jesus Christ of Latter-day Saints (18%)
- Roman Catholics (15%)
- Free Church of Tonga (12%)
5. Timor-Leste
Timor-Leste is a nation located in the southeast region of Asia. In 1994 there were a number of church buildings in Timot-Leste was increased between 100 and 800. The number grew in the course of Indonesian rule under the name of Pancasila resulted in a massive conversion.
6. Armenia
Armenia is a major position in the hearts of Christians. It was the first nation to be able to attain Christianity. It is the first country to be Christianized. Armenian Apostolic Church was founded in the 1st century AD and was named in honor of two apostles: St. Thaddeus and St. Bartholomew.
7. Nambia
Nambia is home to 80-90 percent in Nambia’s Christian the Christian majority. 97% of them are Protestants and the remaining 50 percent are Lutherans. In the second period during the late 19th century missionaries’ efforts led the Nambians to Christianity.
8. Marshall Islands
Marshall Island is a small island situated in the Micronesia region of the Northwestern Pacific Ocean, north of the Equator. Many churches have been built in Marshall Island, including the United Church of Christ–Congregational in the Marshall Islands, the Church of Jesus Christ of Latter-day Saints, and the Assemblies of God.
9. Moldova
Moldova is home to more than 700 church. Ninety percent of Moldova’s Christians have a faith of Eastern Orthodox, while others are Orthodox.
10. Solomon Islands
Solomon Island has six major islands as well as over 900 smaller islands within Melanesia which is a which is part of Oceania. Christian missionaries visited the island in the 1840s. French Catholics under Jean-Baptiste Epalle to establish an institution on Santa Isabel. The main Christians on Solomon Islands are the Anglican Catholics. Solomon Islands are the Anglican Catholics.
According to each country, Europe ranks at the highest with 565,560,000 Christian population. The majority of them are 35.0 percent Catholics with the remainder, 41.2%, are Protestants or other Catholics. Middle East-North Africa shows the least number, with only 12,000,000-16,000,000 people being Christians, of which 2-2.6% are Catholics, while the rest, 1.8 to 2.3%, are Protestants or other Catholics.
Countries with the high percentage of 10 million of Christian people
| Rank | % Christian | Number of Christians | Country |
| 1 | 98.0% | 21,300,000 | Romania |
| 2 | 97.5% | 12,800,000 | Zambia |
| 3 | 95.7% | 63,200,000 | Congo DR |
| 4 | 95.6% | 27,800,000 | Peru |
| 5 | 95.0% | 107,000,000 | Mexico |
| 6 | 94.3% | 36,100,000 | Poland |
| 7 | 94.1% | 13,600,000 | Ecuador |
| 8 | 93.0% | 10,000,000 | Greece |
| 9 | 92.5% | 42,800,000 | Colombia |
| 10 | 92.3% | 10,400,000 | Bolivia |
According to an survey conducted in 2012 Pew Research Center survey, Christianity is believed to be among the top religions around the globe in 2050. In 2050 Christianity could reach a of 3 billion, far exceeding the Muslim population that is estimated to grow to 2.8 billion.
Demographics of Major Traditions within Christianity
Catholicism is the top of the list, with an estimated 1,200,000,000 followers. about 52 percent from the Christian population, and 15.9 percent of the globe. The number of Catholics is stable, however the number of Catholics who follow them is growing quickly. In second place is Protestantism. It is 34.9 percent with 800,640,000 and accounts for 11.6 percent of the world population. Orthodoxies number around 260,380,000 which is 3.8 percent of the world’s population, and 11.4 percent from all Christian population. The remainder, 28,430,000 are not Christians or people who have converted to Christianity comprising 0.4 percent of the world population and 1.3 percent from those who are Christian population. According to a report of the Pew Research Center, around 232 countries and territories are home to Christian majorities, and 70 countries are home to Christian minorities. In general, Christianity is a widespread religion with a substantial global presence. It is predicted to continue its growth especially within Africa in the Middle East and Asia.