
Christianity is the largest religious group in the world, with an estimated 2.3 to 2.6 billion adherents in 2020. About half of all Christians are Catholic, making Catholicism the main branch of Christianity and the Catholic Church the largest church in the world. In 2022, there were 1.39 billion baptized Catholics worldwide, a number that increased to 1.4 billion in 2023. The Catholic Church has expanded more in the last 100 years than at any other time in its 2,000-year history. This growth is particularly notable in sub-Saharan Africa and the Asia-Pacific region, where there were relatively few Christians at the beginning of the 20th century. In the United States, the Catholic Church is the largest individual denomination, making up 22% of the population.
| Characteristics | Values |
|---|---|
| Percentage of Christians who are Catholic | 50% |
| Number of baptized Catholics worldwide | 1.39 billion (2022); 1.41 billion (2023) |
| Number of baptized Catholics worldwide (excluding independent denominations) | 1.27 billion (2025) |
| Number of Catholics in the US | 75.4 million (2010) |
| Percentage of US Catholics who are Latino | 33% |
| Percentage of US Catholics who are non-Hispanic whites | 60% |
| Percentage of US immigrants who are Catholic | 52% |
| Number of Catholics in sub-Saharan Africa | 171 million (2013) |
| Number of Catholics in the Asia-Pacific region | 131 million (2013) |
| Number of Catholics in North America | 89 million (2010) |
| Number of Catholics in the Middle East and North Africa | <1% of Catholics worldwide (2013) |
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What You'll Learn

Catholicism is the main branch of Christianity
The geographic distribution of Catholics has changed substantially over the last century. While Europe and the Americas still host a majority of the world's Christians (63%), their share has decreased from 93% in 1910. In contrast, the proportion of Christians in sub-Saharan Africa and the Asia-Pacific region has grown enormously, with Christianity now being a truly global faith. The vast majority of Catholic growth is outside the western hemisphere, and by 2050, 75% of Catholics will reside outside the West. This shift reflects the increasing cultural diversity of Catholicism, which was born in the Middle East and has always included believers from various backgrounds.
The Catholic Church arrived in what is now the continental United States during the early days of European colonisation in the Americas. It established itself formally in 1565 with the founding of the first Catholic parish in St. Augustine, Florida. In the 1600s, it spread further through missionaries, including Jesuit missionaries. Today, the United States has the largest Christian population in the world, with 67% of its citizens identifying as Christian. However, only 22% of Americans identify as Catholic, with Protestantism being the most common form of Christianity in the country.
Despite the growth of Catholicism in certain regions, secularisation and diminishing religious affiliation are increasing in many wealthier countries. This trend is contributing to a complex and diverse global Christian landscape, with the Catholic Church adapting to local cultures and traditions in different parts of the world.
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Catholic population growth
Over the past century, the number of Catholics worldwide has more than tripled. While the overall population has also increased rapidly, Catholics have maintained a stable share of the global population. However, the geographic distribution of Catholics has changed significantly.
Latin America was the most heavily Catholic region in 1910 and 2010, but its share of the region's population that is Catholic decreased from approximately 90% to 72% during this period. Meanwhile, Europe's Catholic population declined from 44% to 35%. Despite these decreases, Latin America became the region with the largest Catholic population due to its larger population growth.
The most significant growth in the Catholic population occurred in sub-Saharan Africa, which went from about 1% Catholic in 1910 to 21% in 2010. The Asia-Pacific region also experienced growth, with the number of Catholics increasing from 14 million (5%) to 131 million (12%) over the same period. North America's share of the global Catholic population has increased more slowly, from 15 million (5%) in 1910 to 89 million (8%) in 2010.
Brazil has the largest Catholic population globally, but the share of self-identified Catholics in the country dropped from 74% in 2000 to 65% in 2010. Mexico, the second-largest Catholic population, saw a similar decline from 89% to 85% during the same period. The United States is home to about 7% of the world's Catholics, with an estimated 23% of adults identifying as Catholic as of 2010.
While the number of self-identified Catholics has grown, the number of religious brothers and sisters has declined sharply between 1965 and 2017. Conversion to Christianity has increased among Korean Americans, Chinese Americans, and Japanese Americans in the United States.
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Geographic distribution of Catholics
The geographic distribution of Catholics has shifted over time, with the religion's growth occurring predominantly outside the Western Hemisphere. In 1910, Europe was home to about two-thirds of all Catholics, with nearly 90% living in Europe or Latin America. By 2010, however, only about a quarter (24%) of Catholics resided in Europe, with the largest share (39%) in Latin America and the Caribbean. This shift is partly attributed to different rates of population growth; Europe's share of the global population decreased from 24% in 1910 to 11% in 2010, while Latin America's share increased from 4% to 9% over the same period.
As of 2020, the majority of Catholics no longer live in Europe or the Global North, with significant numbers now in the Global South. Africa, in particular, has seen a substantial increase in its Catholic population, growing from 1.9 million in 1900 to an estimated 236 million today. By 2050, it is projected that 75% of Catholics will reside outside the West.
Regionally, the Americas have the largest number and highest proportion of Catholics. Nearly two-thirds of Christians in the Americas (65%) are Catholic, with Brazil having the largest Catholic population in the world, followed by Mexico, the Philippines, and the United States. Europe is the second-largest region by the number of Catholics, accounting for 46% of European Christians. Russia has the largest Christian population in Europe, with more than 70% of its population identifying as Christian, primarily Orthodox Christians.
While the Middle East and North Africa are the birthplace of Christianity, the region currently has a minimal Catholic presence, with less than 1% of Catholics residing there. In contrast, Indonesia, a Muslim-majority country, is home to more Christians than all 20 countries in the Middle East-North Africa region combined.
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Protestants vs. Catholics
Christians are diverse theologically, with about half being Catholic and Protestants making up about 37% of Christians worldwide. The United States, which has the largest Christian population in the world, is home to the largest Protestant population globally, with nearly 210 million Christians and, as of 2021, over 140 million people affiliated with Protestant churches.
Protestants and Catholics worship the same God, but the principles of their faith differ. These differences came to the fore during the Protestant Reformation in the early 16th century, which divided the church into Catholic and Protestant denominations. The Reformation was sparked by Catholic monk Martin Luther, who set out to reform the Roman Catholic Church but instead became the founder of a second Christian confession.
One of the key distinctions between the two denominations is their view of the meaning and authority of the Bible. Protestants believe that the Bible is the "Sola Scriptura," God's only book, and the standard by which all Christian behavior must be measured. In contrast, Catholics do not base their beliefs solely on the Bible but are also bound by the traditions of the Roman Catholic Church.
Another difference lies in their views on salvation. Protestants believe that, on the basis of faith in Christ alone, believers are justified by God, as all their sins are paid for by Christ. Catholics, on the other hand, believe in "grace through faith," but also emphasize the importance of "meritorious works" alongside faith in the process of salvation.
The role of the Pope is another point of divergence between the two groups. Catholics view the Pope as the "Vicar of Christ," representing Jesus as the head of the Church, and possessing the authority to make infallible pronouncements on matters of faith and practice. Protestants, however, reject the papacy, believing that no human is infallible and that Christ alone is the Head of the Church.
While the Christmas rituals of Protestant and Catholic churches are largely similar, there are some differences in their Christmas celebrations. Catholics usually celebrate Christmas mass at midnight on December 24, while Protestants often hold their liturgy in the afternoon. The day after Christmas is observed as the Second Day of Christmas by Protestants, while Catholics commemorate it as Saint Stephen's Day.
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Catholicism's cultural diversity
Catholicism is the most practised form of Christianity, with around half of all Christians identifying as Catholic. The religion is practised across the world, with the Americas having the largest number and highest proportion of Catholics. Europe and the Americas are home to 63% of the world's Christians, but this is lower than it was in 1910, when the figure was 93%. The proportion of Europeans and Americans who are Christian has dropped from 95% in 1910 to 76% in 2010 in Europe and from 96% to 86% in the Americas. Meanwhile, the number of Christians in the Asia-Pacific region and sub-Saharan Africa has grown enormously, with the share of the population that is Christian in sub-Saharan Africa climbing from 9% in 1910 to 63% in 2010.
Catholicism has a long history of cultural diversity, with the religion taking root within different cultures around the world. The Catholic Church arrived in what is now the continental United States during the earliest days of European colonisation in the Americas, establishing itself in 1565 with the first Catholic parish in St. Augustine, Florida. It spread in the 1600s through missionaries, including Jesuit missionaries. Today, the United States is home to a diverse range of Catholic communities, including African American Catholics and Oriental Protestant bodies such as the Malankara Mar Thoma Syrian Church.
The Catholic Church recognises the importance of cultural diversity and actively promotes it within its community. The Church's teachings emphasise the value of diversity and the inclusion of all cultures in the spread of the Gospel message. Pope Benedict XVI acknowledged the relationship between the Church and different cultures, stating that "God does not reveal himself in the abstract, but by using languages, imagery and expressions that are bound to different cultures". The Church's process of "enculturation" incorporates the diversity of cultures into its teachings, spreading the message of Jesus Christ more broadly and deeply into human society.
The Cultural Diversity in the Church committee, led by Bishop of Brooklyn, Most Rev. Robert Brennan, is dedicated to bringing all culturally and racially diverse communities into faith participation and evangelisation. The committee recognises that diversity is a growing reality, not just in the United States but globally. The Church's anti-racism initiatives, such as the "Made in God's Image" campaign, further emphasise the importance of cultural diversity and the dignity of all human beings.
The Catholic Church's embrace of cultural diversity is reflected in its long history of spreading its message to people of all nations and cultures. St. Luke's description of the Day of Pentecost in the Acts of the Apostles highlights the universal significance of the Catholic Church, with people from a variety of nations and cultures hearing the apostles speak. This diversity of cultures is seen as a blessing and an opportunity for mutual enrichment, as Catholics offer the gift of the Gospel message to others while also receiving the contributions of different cultures.
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Frequently asked questions
Approximately 50% of Christians worldwide are Catholics.
There are about 1.4 billion Catholics in the world. This number has increased from 267 million in 1900 to 1.05 billion in 2000.
Most Catholics do not live in Europe or the Global North. Rapid growth has occurred in sub-Saharan Africa, which is now home to about 171 million Catholics (16%), up from an estimated 1 million (less than 1%) in 1910.











































