Religion in the United States is both widespread and diverse, with higher reported levels of belief than other wealthy Western nations. Polls indicate that an overwhelming majority of Americans believe in a higher power (2021), engage in spiritual practices (2022), and consider themselves religious or spiritual (2017).
The mainline Protestant churches are a group of Protestant denominations in the United States and Canada largely of the theologically liberal or theologically progressive persuasion that contrast in history and practice with the largely theologically conservative evangelical, fundamentalist, charismatic, confessional, Confessing Movement, historically Black church, and Global South Protestant denominations and congregations. Some make a distinction between "mainline" and "oldline", with the former referring only to denominational ties and the latter referring to church lineage, prestige and influence. However, this distinction has largely been lost to history and the terms are now nearly synonymous.
The Catholic Church is "the Catholic Communion of Churches, both Roman and Eastern, or Oriental, that are in full communion with the Bishop of Rome ." The church is also known by members as the People of God, the Body of Christ, the "Temple of the Holy Spirit", among other names. According to Vatican II's Gaudium et spes, the "church has but one sole purpose–that the kingdom of God may come and the salvation of the human race may be accomplished."
There are 0.8–1.05 billion Protestants worldwide, among approximately 2.5 billion Christians. In 2010, a total of more than 800 million included 300 million in Sub-Saharan Africa, 260 million in the Americas, 140 million in Asia-Pacific region, 100 million in Europe and 2 million in Middle East-North Africa. Protestants account for nearly forty percent of Christians worldwide and more than one tenth of the total human population. Various estimates put the percentage of Protestants in relation to the total number of the world's Christians at 33%, 36%, 36.7%, and 40%, while in relation to the world's population at 11.6% and 13%.
The Western religions are the religions that originated within Western culture, which are thus historically, culturally, and theologically distinct from Eastern, African and Iranian religions. The term Abrahamic religions is often used instead of using the East and West terminology, as these originated in the Middle East.
As of the year 2023, Christianity had approximately 2.4 billion adherents and is the largest religion by population. According to a PEW estimation in 2020, Christians made up to 2.38 billion of the worldwide population of about 8 billion people. It represents nearly one-third of the world's population and is the largest religion in the world, with the three largest groups of Christians being the Catholic Church, Protestantism, and the Eastern Orthodox Church. The largest Christian denomination is the Catholic Church, with 1.3 billion baptized members. The second largest Christian branch is either Protestantism, or the Eastern Orthodox Church.
Religion has been a major influence on the societies, cultures, traditions, philosophies, artistic expressions and laws within present-day Europe. The largest religion in Europe is Christianity. However, irreligion and practical secularisation are also prominent in some countries. In Southeastern Europe, three countries have Muslim majorities, with Christianity being the second-largest religion in those countries. Ancient European religions included veneration for deities such as Zeus. Modern revival movements of these religions include Heathenism, Rodnovery, Romuva, Druidry, Wicca, and others. Smaller religions include Indian religions, Judaism, and some East Asian religions, which are found in their largest groups in Britain, France, and Kalmykia.
Asia is the largest and most populous continent and the birthplace of many religions including Buddhism, Christianity, Confucianism, Hinduism, Islam, Jainism, Judaism, Shinto, Sikhism, Taoism, and Zoroastrianism. All major religious traditions are practiced in the region and new forms are constantly emerging. Asia is noted for its diversity of culture. Islam and Hinduisms are the largest religion in Asia with approximately 1.2-1.3 billion adherents each.
Growth of religion involves the spread of individual religions and the increase in the numbers of religious adherents around the world. In sociology, desecularization is the proliferation or growth of religion, most commonly after a period of previous secularization. Statistics commonly measure the absolute number of adherents, the percentage of the absolute growth per-year, and the growth of converts in the world.
Christianity is the most prevalent religion in the United States. A recent Gallup survey from 2023 indicates that of the entire U.S. population about 67% is Christian. The majority of Christian Americans are Protestant Christians, though there are also significant numbers of American Roman Catholics and other Christian denominations such as Latter Day Saints, Eastern Orthodox Christians, Oriental Orthodox Christians, and Jehovah's Witnesses. The United States has the largest Christian population in the world and, more specifically, the largest Protestant population in the world, with nearly 210 million Christians and, as of 2021, over 140 million people affiliated with Protestant churches, although other countries have higher percentages of Christians among their populations. The Public Religion Research Institute's "2020 Census of American Religion", carried out between 2014 and 2020, showed that 70% of Americans identified as Christian during this seven-year interval. In a 2020 survey by the Pew Research Center, 65% of adults in the United States identified themselves as Christians. They were 75% in 2015, 70.6% in 2014, 78% in 2012, 81.6% in 2001, and 85% in 1990. About 62% of those polled claim to be members of a church congregation.
This is an overview of religion by country or territory in 2010 according to a 2012 Pew Research Center report. The article Religious information by country gives information from The World Factbook of the CIA and the U.S. Department of State.
This page shows the membership statistics of the Church of Jesus Christ of Latter-day Saints within the United States.
Christianity is the most adhered-to religion in Canada, with 19,373,330 Canadians, or 53.3%, identifying themselves as of the 2021 census. The preamble to the Canadian Charter of Rights and Freedoms refers to God. The French colonization beginning in the 17th century established a Roman Catholic francophone population in New France, especially Acadia and Lower Canada. British colonization brought waves of Anglicans and other Protestants to Upper Canada, now Ontario. The Russian Empire spread Orthodox Christianity in a small extent to the tribes in the far north and western coasts, particularly hyperborean nomads like the Inuit. Orthodoxy would arrive in mainland Canada with immigrants from the eastern and southern Austro-Hungarian Empire and western Russian Empire starting in the 1890s; then refugees from the Soviet Union, Eastern Bloc, Greece and elsewhere during the last half of the 20th century.
Religion in Latin America is characterized by the historical predominance of Catholicism, and growing number and influence of a large number of groups that belong to Protestantism, as well as by the presence of Irreligion. According to survey data from Statista in 2020, 57% of the Latin American population is Catholic and 19% is Protestant.
Islam is a minority religion in all of the countries and territories of the Americas, around 1% of North America population are Muslims, and 0.1% of Latin America and Caribbean population are Muslims.
Based on the numbers of adherents, the Eastern Orthodox Church is the second largest Christian communion in the world, after the Roman Catholic Church, with the most common estimates of baptised members being approximately 220 million. The numerous Protestant groups in the world, if taken all together, substantially outnumber the Eastern Orthodox, but they differ theologically and do not form a single communion.
Adherents of Islam constitute the world's second largest and fastest growing major religious grouping, maintaining suggested 2017 projections in 2022. As of 2020, Pew Research Centre (PEW) projections suggest there are a total of 1.9 billion adherents worldwide. Further studies indicate the worldwide spread and percentage growth of Islam, may be attributed to high birth rates followed by a trend of worldwide adoption and conversion to Islam.
A decline of Christian affiliation in the Western world has been observed in the decades since the end of World War II. While most countries in the Western world were historically almost exclusively Christian, the post-World War II era has seen developed countries with modern, secular educational facilities shifting towards post-Christian, secular, globalized, multicultural and multifaith societies.
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