How Many Christian Church Denominations are There?

Wondering how many Christian denominations are there? There are many different denominations of Christianity, each with its own beliefs and practices. While there is some overlap, each denomination has its own unique perspective on God and the Bible. This can make it confusing for newcomers to understand all the different options out there. In this post, we’ll take a look at some of the most common Christian denominations in America. We’ll also discuss what sets them apart from one another. So whether you’re just curious or looking to find a new church home, read on!

Most Common Christian Denominations

How Many Christian Church Denominations are There?

There are dozens of Christian denominations in America, each with its own unique beliefs and practices. But some denominations are more common than others. Here are the seven most common Christian denominations in America, based on data from the Pew Research Center:

Roman Catholicism

The Roman Catholic Church is the largest Christian denomination in the world, with over 1.3 billion members worldwide. It is headquartered in Vatican City, and its official language is Latin. The Roman Catholic Church teaches that it is the one true Church founded by Jesus Christ and that its bishops are the successors of Christ’s apostles. The Roman Catholic Church also recognizes the authority of the Pope, who serves as the head of the Church.

The Roman Catholic Church has a long and rich history, dating back to the time of Christ. Catholicism was originally known as “The Way,” and it was not until Emperor Constantine granted official status to Christianity in 313 AD that it began to be called “Catholicism.” Since then, Catholicism has played a significant role in the development of Western civilization.

The Roman Catholic Church teaches that there is one way to find salvation and to be saved from God’s wrath on Judgment Day. That way is through faith in Jesus Christ and his sacrifice on the cross. Catholics believe that by accepting Christ as their personal savior, they can be forgiven for their sins and granted eternal life in heaven.

The Roman Catholic Church also teaches that good works are necessary for salvation. Catholics are expected to follow the Ten Commandments, attend Mass regularly, receive the sacraments, and perform acts of charity. In addition, Catholics are required to confess their sins to a priest in order to receive absolution.

The Roman Catholic Church is governed by a hierarchy of clergy headed by the Pope. The Pope is considered to be the successor of St. Peter, the first Pope. Under the Pope are the cardinals, who are responsible for electing new Popes. Below the cardinals are the bishops, who oversee the priests and deacons in their dioceses.

The Roman Catholic Church has a significant presence in education, healthcare, and social services. In addition, the Church is active in missionary work and evangelization. Catholicism is also known for its artistic and architectural contributions, as well as its contribution to literature and philosophy.

Evangelical Protestants

The Evangelical Protestants denomination is one of the largest and most influential Christian denominations in America. It is a Protestant body that includes many different sub-denominations, such as Baptists, Congregationalists, Methodists, Presbyterians, and more. The beliefs of Evangelical Protestants are based on the Bible, and they place a strong emphasis on evangelism (sharing the gospel with others) and personal salvation. Many Evangelical churches are very active in social and political issues, and they are known for their conservative views on morality and social issues. The Evangelical Protestants denomination is a major force in American Christianity, and it continues to grow in popularity.

Mainline Protestants

Mainline Protestants are a group of Protestant denominations that emerged in the United States during the early 19th century. The term “mainline” is used to refer to these churches’ traditional emphasis on social reform and involvement in politics.

The Mainline Protestants include the Episcopal Church, the Presbyterian Church (USA), the United Methodist Church, and the Evangelical Lutheran Church in America. These churches are often considered to be more liberal than other Protestant groups, such as evangelicals and fundamentalists.

The Mainline Protestants have played a significant role in American culture and society, particularly in the areas of education, social welfare, and activism. Many Mainline Protestant churches were founded by people who were committed to social reform, such as abolitionism and the civil rights movement.

The Mainline Protestants are sometimes known as “the social gospel” churches because of their focus on using Christian principles to improve society. This focus has led the Mainline Protestants to be active in many different social causes, such as the civil rights movement, the women’s suffrage movement, and the environmental movement.

The Mainline Protestants have also been active in politics, particularly in promoting progressive policies such as universal healthcare and gun control. In recent years, however, the Mainline Protestants have seen a decline in membership and influence. This decline is often attributed to the rise of more conservative Protestant groups, such as evangelicals and fundamentalists.

The Orthodox Church

The Orthodox Church is a denomination of the Christian faith that is based on the teachings of the apostles and the early church fathers. It is the largest Church in Eastern Christianity, and it has its roots in the Byzantine Empire. The Orthodox Church shares many beliefs with the Catholic Church, but there are some key differences between the two denominations.

The Orthodox Church teaches that Jesus Christ is the Son of God and that he came to earth to save humanity from sin. The Church also believes in the Holy Trinity, and it teaches that Mary is the mother of God.

The Orthodox Church has a hierarchical structure, with bishops serving as leaders at the local level. There is also a Patriarch, who serves as the head of the Church, and he is based in Constantinople.

The Orthodox Church is not as centralized as the Catholic Church, and there is more emphasis on the role of the local church community. This can be seen in the fact that services are typically conducted in the local language rather than Latin.

The Orthodox Church has a rich tradition of iconography, and its art is highly respected. The Church also has a strong musical tradition, and its liturgical music is some of the most beautiful in the world.


The Orthodox Church has a global reach, with millions of believers spread across the world. In recent years, there has been a growth in interest in the Orthodox Church in the West, and this is likely to continue as more people become interested in its ancient traditions and rich history.


The Mormons, also known as the Church of Jesus Christ of Latter-day Saints, are a Christian denomination that believes in Joseph Smith’s revelations and follows the teachings of the Book of Mormon. The Mormons are one of the fastest growing religions in the world, with over 16 million members worldwide.

Mormonism began in the early 1800s when Joseph Smith had a series of religious visions. In 1823, Smith claimed to have received a revelation from God that told him about an ancient American civilization that was destroyed by God because of their wickedness. This revelation led Smith to believe that he had been chosen to restore the true gospel to the earth. In 1830, Smith published the Book of Mormon, which tells the story of this ancient American civilization.

The Mormons believe that Jesus Christ will return to earth and establish His kingdom. The Mormons also believe in the principle of eternal families, which means that families can be together forever. The Mormons have strict moral standards and promote wholesome family values.

If you are interested in learning more about the Mormon faith, there are many resources available. The Church of Jesus Christ of Latter-day Saints has a website that provides information about the history, beliefs, and practices of the Mormon religion. There are also many books and articles about Mormonism.

Jehovah’s Witnesses

The Jehovah’s Witnesses are a religious denomination with more than eight million members worldwide. The group is best known for its door-to-door proselytizing and publications, which include the widely-distributed Watchtower magazine.

Founder Charles Taze Russell began the Jehovah’s Witnesses in the 1870s, initially as a study group focused on bible prophecy. The group took on the name “Jehovah’s Witnesses” in 1931.

Since its inception, the Jehovah’s Witnesses have been known for their staunch opposition to blood transfusions, military service, and involvement in politics. They also teach that Jesus Christ will return to earth soon and establish a Kingdom ruled by God.

The Jehovah’s Witnesses have come under criticism from other Christians for their beliefs and practices. The group has also been accused of being a cult by some ex-members and observers.

Despite this, the Jehovah’s Witnesses continue to grow in numbers, with an estimated one million new members joining the group each year.

Other Christian Denominations

So, how many Christian denominations are there? More than 35,000, according to some estimates. Other than the six major denominations mentioned above, there are approximately 7 million adults in America who belong to other Christian denominations, such as the Presbyterian Church (USA), the Episcopal Church, and the United Methodist Church. This group makes up about 2 percent of the total U.S. adult population.

Major Differences Between the Different Denominations

One of the major differences between Roman Catholicism, Evangelical Protestants, Mainline Protestants, The Orthodox Church, Mormons, and Jehovah’s Witnesses is their beliefs regarding the authority of the Bible. Roman Catholics believe in the authority of both the Bible and Church tradition, while Evangelical Protestants place sole emphasis on the Bible. Mainline Protestants generally hold to the authority of the Bible as well, but with a greater willingness to also consider other sources of religious truth such as church tradition and reason. The Orthodox Church believes in the authority of Scripture and church tradition equally, while Mormons place more emphasis on additional scriptures beyond the Bible. Jehovah’s Witnesses believe that the Bible is authoritative but only as interpreted by their own organization.

Another significant difference between these groups is their beliefs regarding salvation. Roman Catholics believe in the necessity of both faith and good works for salvation. Evangelical Protestants generally emphasize faith alone as the primary requirement for salvation, while Mainline Protestants tend to view good works as playing a role in salvation as well. The Orthodox Church teaches that faith and good works are both necessary for salvation, while Mormons believe that individuals can receive forgiveness through Christ’s atonement and then be saved by obedience to Mormon teachings. Jehovah’s Witnesses believe that salvation comes through faith in Jesus Christ and obedience to Jehovah’s Witness teachings.

Finally, there are differences in how these groups practice their faith. Roman Catholicism places a strong emphasis on ritual and tradition, while Evangelical Protestantism tends to be more informal and experience-based. Mainline Protestantism falls somewhere in between, while The Orthodox Church has a highly ritualized and sacramental approach to worship. Mormons also have a very structured faith life centered around specific rituals and practices, while Jehovah’s Witnesses place more emphasis on Bible study and witnessing to others about their beliefs.

Why Does Christianity Have So Many Denominations?

Christianity is unique among the world’s religions in having so many different denominations. While there are a number of reasons for this, one of the most significant is the fact that Christianity is an inclusive faith that welcomes people of all backgrounds and beliefs.

This diversity is reflected in the many different denominational families within Christianity, each of which has its own distinct traditions, beliefs, and practices. Denominations also often have different interpretations of the Bible, which can lead to further disagreement on theological issues.

The result is a complex landscape of churches and denominations, which can be confusing for both believers and non-believers alike. However, despite their differences, Christians of all denominations share a common belief in the teachings of Jesus Christ and the desire to follow his example.

Our Final Thoughts

So, how many Christian denominations are there? The answer is ‘a lot.’ Each of them has its own beliefs and practices. With so many different groups, it’s hard to know which one is right for you. While there is some disagreement among them, they all have the same goal: to follow Jesus Christ and spread His word. If you’re interested in finding a church that aligns with your beliefs, take a look at the different denominations we’ve listed and see which one feels right for you.