Joshua Bennett
The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church in the world, with 1.27 to 1.41 billion baptised members worldwide as of 2025. The number of Catholics has more than tripled over the past century, from 291 million in 1910 to nearly 1.1 billion in 2010. While there are no precise figures for 1960, we can estimate the number of Catholics in that year to be between 400 million and 600 million, based on the growth trend between 1910 and 2010. This estimate suggests that Catholics comprised between 12% and 17% of the world's population in 1960.
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What You'll Learn
There were 291 million Catholics in 1910
There were an estimated 291 million Catholics in 1910, according to the Pew Research Center. This number has more than tripled over the past century, reaching nearly 1.1 billion by 2010. The Catholic Church is the largest non-government provider of education and health care worldwide. It operates 95,000 elementary schools, 47,000 secondary schools, 5,000 hospitals, and 10,000 orphanages.
In 1910, Europe was home to about two-thirds of all Catholics, with 65% of the global Catholic population residing in the continent. Latin America was also a significant hub, with 24% of the world's Catholics. However, the geographic distribution of Catholics has changed substantially over the past century. By 2010, Europe's share of the global Catholic population had decreased to 24%, while Latin America and the Caribbean became home to 39% of the world's Catholics.
The United States has the fourth-largest Catholic population in the world, with approximately 75.4 million Catholics as of 2010. The Catholic population in the U.S. has been influenced by immigration, with 30% of Catholics in the country being foreign-born. Additionally, the development of the American Catholic school system can be traced to three distinct periods: 1750-1870, 1870-1910, and 1910-1945. During the first period, most Catholic children attended public schools, while the second period saw a commitment to a separate Catholic school system. The third period was marked by modernization and a de-emphasis on ethnicity in many areas.
The Catholic Church in the United States has also faced anti-Catholic sentiment and political movements, such as the Know Nothings in the 1840s and the American Protective Association in the 1890s. Despite these challenges, Catholicism has had a significant cultural, social, and political impact on the country. By 1910, Irish Catholics played a prominent role in shaping America's labor movement, and German Catholics were also actively involved.
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Catholics comprised 48% of Christians in 1910
In 1910, Catholics comprised about 48% of all Christians and 17% of the world's total population, according to historical estimates from the World Christian Database. This estimate of 48% has remained relatively stable over the past century, with a Pew Research study from 2010 finding that Catholics comprised about 50% of Christians worldwide and 16% of the total global population.
The Catholic Church has expanded more in the last 100 years than in any other century of its 2,000-year existence. In 1910, Europe was home to about two-thirds of all Catholics, and nearly nine-tenths lived in Europe (65%) or Latin America (24%). By 2010, however, only about a quarter of all Catholics (24%) were in Europe, with the largest share (39%) in Latin America and the Caribbean. This shift is due in part to different rates of overall population growth in the regions. While Europe's population decreased from 24% of the world in 1910 to 11% in 2010, Latin America and the Caribbean grew from 4% to 9% over the same period.
The geographic distribution of Catholics has changed substantially over the past century, with the majority of today's Catholics living outside Europe or the Global North. By 2050, it is estimated that 75% of Catholics will live outside the West. This shift is partly due to the increasing secularization in wealthier countries, where specific religious affiliations and formal religious practices are diminishing. As a result, Christianity is becoming more of a social memory than a major factor in public life in these regions.
The Catholic Church has always been culturally diverse, with the first generation of Christians including freemen and slaves, Greeks and Jews. Over time, the Church stressed unity in governance, discipline, and theology, resulting in a more uniform, Eurocentric style of Catholicism that was initially exported to the Americas and Asia. However, Catholicism has since evolved to incorporate local customs, music, symbols, and rituals, developing a rich range of expressions and traditions influenced by the histories, experiences, and cultures of the regions where it took root.
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Europe was home to two-thirds of Catholics in 1910
Europe was home to about two-thirds of Catholics worldwide in 1910, with nearly nine-in-ten living in Europe (65%) or Latin America (24%). In contrast, by 2010, only around a quarter of all Catholics (24%) resided in Europe, marking a significant shift in the global distribution of Catholics. This change is partly attributed to varying rates of overall population growth across regions.
In 1910, Europe accounted for 24% of the world's population, but by 2100, only 11% of the global population lived in Europe. During this period, Latin America and the Caribbean experienced more substantial population growth, increasing from 4% to 9% of the global population. While both Latin America and Europe became less predominantly Catholic, Latin America's larger population growth pushed it past Europe as the region with the most Catholics.
The distribution of Catholics within Europe has also changed over time. In 1910, 44% of Europe's population was Catholic, compared to 35% in 2010. Southern and Central European countries tend to have larger Catholic populations, with Poland, Italy, Portugal, Spain, Hungary, and Lithuania all having high shares of Catholics. Ireland, the United Kingdom, the Netherlands, and Ukraine also have significant Catholic populations.
Outside of Europe, the Catholic population has grown rapidly in sub-Saharan Africa, increasing from an estimated 1 million (less than 1%) in 1910 to 171 million (16%) in 2010. The Asia-Pacific region has also seen notable growth, rising from 14 million (5%) to 131 million (12%) during the same period. North America's share of the global Catholic population has increased more gradually, from 15 million (5%) in 1910 to 89 million (8%) in 2010.
While the number of Catholics worldwide has more than tripled from 291 million in 1910 to nearly 1.1 billion in 2010, the Catholic population's share of the total global population has remained relatively stable at around 16%. This stability is due to the rapid growth of the world's overall population during the same period.
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The Catholic Church is the world's largest Christian church
The Catholic Church, also known as the Roman Catholic Church, is the world's largest Christian church. It is among the world's oldest and largest international institutions, with a continuous history that dates back to the earliest Christian churches founded by Jesus Christ and his apostles. The Catholic Church has played a prominent role in the history and development of Western civilization.
According to the CIA Factbook and the Pew Research Center, the five countries with the largest number of Catholics are Brazil, Mexico, the Philippines, the United States, and Italy. Together, these countries account for a significant proportion of the global Catholic population. The United States, for example, is home to about 7% of all Catholics worldwide. As of 2010, an estimated 23% of US adults and 24% of the total population were Catholic. Brazil, the country with the largest Catholic population, saw a decline in the share of its population identifying as Catholic, dropping from 74% in 2000 to 65% in 2010.
The Catholic Church consists of 24 autonomous churches, including the Latin Church and 23 Eastern Catholic Churches, which comprise almost 3,500 dioceses and eparchies around the world. Each diocese or eparchy is overseen by one or more bishops, with the pope, currently Pope Leo XIV, serving as the chief pastor of the church. The Catholic Church is a hierarchical institution, with the pope at its head, followed by the Roman Curia, which administers the day-to-day business of the church.
Over the past century, the number of Catholics worldwide has more than tripled, from 291 million in 1910 to nearly 1.1 billion in 2010. As of 2025, there are an estimated 1.27 to 1.41 billion baptized Catholics worldwide, constituting approximately 48% of all Christians and 16% to 17.7% of the total global population. The Americas have the highest number of Catholics, with 47.8% of the world's Catholics residing in this region, followed by Europe (20.4%), Africa (20%), Asia (11%), and Oceania (1.9%).
The Catholic Church is not just a religious institution but also a provider of education and healthcare services. It is the largest non-government provider of education and health care globally, with a vast network of charities, hospitals, orphanages, elementary schools, and secondary schools. The church's influence extends beyond its religious teachings, impacting the social, political, and cultural aspects of societies around the world.
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The US has the fourth-largest Catholic population
The number of Catholics worldwide has more than tripled over the past century, growing from 291 million in 1910 to 1.1 billion in 2010. While the overall population has also increased during this period, Catholics have consistently made up about half of all Christians and 16-17% of the global population.
The United States is home to the fourth-largest Catholic population in the world, after Brazil, Mexico, and the Philippines. In 2017, there were approximately 77.4 million Catholics in the US, comprising about 22% of the country's total population. This number has since increased to around 72 million in 2021, with 21% of US adults describing themselves as Catholic.
Catholicism is the largest religious denomination in the US, outnumbering any single Protestant denomination. It has had a significant cultural, social, and political impact on the country. The Catholic population is spread across the nation, with regional variations in terms of concentration. The Northeast has the highest percentage of Catholics at 24%, followed by the Midwest at 19%, the West at 25%, and the South at 32%. Rhode Island is the state with the highest proportion of Catholic residents, at 42%.
Demographically, the Catholic population in the US is diverse. As of 2025, 54% of US Catholics are White, 36% are Hispanic, 4% are Asian, and 2% are Black, with the remaining 2% identifying with another race. There are also educational differences within the Catholic population, with 35% holding a bachelor's degree, 27% having some college experience, and 38% possessing a high school education or less.
The racial and ethnic makeup of US Catholics also varies by region. For example, in the Midwest, 78% of Catholics are White and 15% are Hispanic, while in the South, these numbers are 44% and 45% respectively. The West has the largest population of Hispanic Catholics, with 58% compared to 27% White Catholics, and also a relatively larger population of Asian Catholics at 10%.
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