Abrahamic / Middle Eastern Christianity How Many Christians Are In the World Today? Share Flipboard Email Print Doug Armand / Getty Images Christianity Denominations of Christianity Christianity Origins The Bible The New Testament The Old Testament Practical Tools for Christians Christian Life For Teens Christian Prayers Weddings Inspirational Bible Devotions Funerals and Memorial Services Christian Holidays Christian Entertainment Key Terms in Christianity Catholicism Latter Day Saints View More By Mary Fairchild Christianity Expert General Biblical Studies, Interdenominational Christian Training Center Mary Fairchild is a full-time Christian minister, writer, and editor of two Christian anthologies, including "Stories of Cavalry." our editorial process Facebook Facebook Twitter Twitter Mary Fairchild Updated September 24, 2018 In the last 100 years, the number of Christians in the world has quadrupled from about 600 million in 1910 to more than 2 billion presently. Today, Christianity is the world's largest religious group. According to the Pew Forum on Religion and Public Life, in 2010, there were 2.2 billion Christians of all ages living in the world. Worldwide Number of Christians In 2015, Christians still comprised the largest religious group in the world (with 2.3 billion adherents), representing nearly a third (31%) of the total global population. United States adherents - 247 million in 2010United Kingdom adherents - 45 million in 2010 Percentage of Christians Worldwide 32% of the world's population is considered to be Christian. Top 3 Largest National Christian Populations About half of all Christians live in just 10 countries. The top three are the United States, Brazil, and Mexico: United States - 246,780,000 (79.5% of the Population)Brazil - 175,770,000 (90.2% of the Population)Mexico - 107,780,000 (95% of the Population) Number of Christian Denominations According to the Center for the Study of Global Christianity (CSGC) at Gordon-Conwell Theological Seminary, there are approximately 41,000 Christian denominations and organizations in the world today. This statistic takes into consideration cultural distinctions between denominations in different countries, so there is an overlapping of many denominations. Major Christian Traditions Roman Catholic - The Roman Catholic Church denomination is the largest Christian group in the world today with more than a billion followers constituting about half of the world's Christian population. Brazil has the largest number of Catholics (134 million), more than in Italy, France, and Spain combined. Protestant - There are approximately 800 million Protestants in the world, comprising 37% of the global Christian population. The United States has more Protestants than any other country (160 million), which is about 20% of the worldwide total number of Christians. Orthodox - Approximately 260 million people worldwide are Orthodox Christians, comprising 12% of the global Christian population. Nearly 40% of Orthodox Christians worldwide live in Russia. About 28 million Christians worldwide (1%) do not belong to one of these three largest Christian traditions. Christianity in America Today Today in the U.S., about 78% of adults (247 million) identify themselves as Christian. In comparison, the next largest religions in America are Judaism and Islam. Combined they represent less than three percent of the United States population. However, according to ReligiousTolerance.org, there are more than 1500 different Christian faith groups in North America. These include mega-groups like Roman Catholic and Orthodox, Anglican, Lutheran, Reformed, Baptists, Pentecostals, Amish, Quakers, Adventists, Messianic, Independent, Communal, and Non-Denominational. Christianity in Europe In 2010, more than 550 million Christians were living in Europe, representing about one fourth (26%) of the global Christian population. The highest number of Christians in Europe reside in Russia (105 million) and Germany (58 million). Pentecostals, Charismatics, and Evangelicals Of the approximate 2 billion Christians in the world today, 279 million (12.8% of the world's Christian population) identify themselves as Pentecostals, 304 million (14%) are Charismatics, and 285 million (13.1%) are Evangelicals or Bible-believing Christians. (These three categories are not mutually exclusive.) Pentecostals and Charismatics make up about 27% of all the Christians in the world and about 8% of the total population in the world. Missionaries and Christian Workers In the not evangelized world, there are 20,500 full-time Christian workers and 10,200 foreign missionaries. In the evangelized non-Christian world, there are 1.31 million full-time Christian workers. In the Christian world, there are 306,000 foreign missionaries to other Christian lands. Also, 4.19 million full-time Christian workers (95%) work within the Christian world. Bible Distribution Approximately 78.5 million Bibles are distributed globally per year. Number of Christian Books in Print There are approximately 6 million books about Christianity in print today. Number of Christian Martyrs Worldwide On average, about 160,000 Christians worldwide are martyred for their faith per year. View Article Sources Liu, Joseph. “The Size and Distribution of the World's Christian Population.” Pew Research Center's Religion & Public Life Project, Pew Research Center's Religion & Public Life Project, 5 Aug. 2016, www.pewforum.org/2011/12/19/global-christianity-exec/.Liu, Joseph. “Christian Traditions | Pew Research Center.” Pew Research Center's Religion & Public Life Project, Pew Research Center's Religion & Public Life Project, 7 Aug. 2013, www.pewforum.org/2011/12/19/global-christianity-traditions/.World Christian Database, www.worldchristiandatabase.org/.World Religion Database, www.worldreligiondatabase.org/wrd_default.asp.