A Christian denomination is a distinct religious body within Christianity that comprises all church congregations of the same kind, identifiable by traits such as a name, particular history, organization, leadership, theological doctrine, worship style and, sometimes, a founder. It is a secular and neutral term, generally used to denote any established Christian church. Unlike a cult or sect, a denomination is usually seen as part of the Christian religious mainstream. Most Christian denominations refer to themselves as churches, whereas some newer ones tend to interchangeably use the terms churches, assemblies, fellowships, etc. Divisions between one group and another are defined by authority and doctrine; issues such as the nature of Jesus, the authority of apostolic succession, biblical hermeneutics, theology, ecclesiology, eschatology, and papal primacy may separate one denomination from another. Groups of denominations—often sharing broadly similar beliefs, practices, and historical ties—are sometimes known as "branches of Christianity". These branches differ in many ways, especially through differences in practices and belief.
There are between 800 million and 1 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%.
Religion in Egypt controls many aspects of social life and is endorsed by law. The state religion of Egypt is Islam, although estimates vary greatly in the absence of official statistics. Since the 2006 census religion has been excluded, and thus available statistics are estimates made by religious and non-governmental agencies. The country is majority Sunni Muslim, with the next largest religious group being Coptic Orthodox Christians. The exact numbers are subject to controversy, with Christians alleging that they have been systemically under-counted in existing censuses.
As of the year 2021, Christianity had approximately 2.38 billion adherents and is the largest religion by population respectively. 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 in Nigeria is diverse. The country is home to some of the world's largest Christian and Muslim populations, simultaneously. Reliable recent statistics do not exist; however, Nigeria is divided roughly in half between Muslims, who live mostly in the north, and Christians, who live mostly in the south. Indigenous religions, such as those native to the Igbo and Yoruba ethnicities, have been declining for decades and been replaced by Christianity or Islam. The Christian share of Nigeria's population is also now on the decline, due to a lower fertility rate relative to the Muslim population in the country.
Christianity has a long history in the region that is now Sudan and South Sudan. Ancient Nubia was reached by Coptic Christianity by the 1st century.
As of 2011, most Armenians in Armenia are Christians (97%) and are members of the Armenian Apostolic Church, which is one of the oldest Christian churches. It was founded in the 1st century AD, and in 301 AD became the first branch of Christianity to become a state religion.
Religion in Ethiopia consists of a number of faiths. Among these mainly Abrahamic religions, the most numerous is Christianity totaling at 67.3%, followed by Islam at 31.3%. There is also a longstanding but small Ethiopian Jewish community. Some adherents of the Baháʼí Faith likewise exist in a number of urban and rural areas. Additionally, there is also a substantial population of the adherents of traditional faiths.
Christianity is the predominant religion in Uganda. According to the 2014 census, over 84 percent of the population was Christian, while about 14 percent of the population adhered to Islam, making it the largest minority religion. Anglicanism and Catholicism are the main Christian denominations in the country.
Christianity is the most prevalent religion in the United States. Estimates from 2021 suggest that of the entire U.S. population about 63% 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, Orthodox Christians and 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.
Christianity in Nigeria represents one of several religious traditions in the country, including Islam and Traditional African religions.
Religion in Eritrea consists of a number of faiths. The two major religions in Eritrea are Christianity and Islam. However, the number of adherents of each faith is subject to debate. Estimates of the Christian share of the population range from 47% and 63%, while estimates of the Muslim share of the population range from 37% to 52%.
Christianity is the majority religion in Cameroon, with significant minorities of the adherents of Islam and traditional faiths.
South Sudan, officially the Republic of South Sudan, is a landlocked country in eastern Central Africa. It is bordered by Ethiopia, Sudan, the Central African Republic, the Democratic Republic of the Congo, Uganda, and Kenya, and includes the vast swamp region of the Sudd, formed by the White Nile and known locally as the Bahr al Jabal, meaning "Mountain Sea". The population was 11,088,796 in 2023, and Juba is the capital and largest city. South Sudan gained independence from Sudan on 9 July 2011, making it the most recent sovereign state or country with widespread recognition as of 2024.
South Sudan is home to around 60 indigenous ethnic groups and 80 linguistic partitions among a 2021 population of around 11 million. Historically, most ethnic groups were lacking in formal Western political institutions, with land held by the community and elders acting as problem solvers and adjudicators. Today, most ethnic groups still embrace a cattle culture in which livestock is the main measure of wealth and used for bride wealth.
The Catholic Church in South Sudan is composed of one ecclesiastical province with one archdiocese and six suffragan dioceses. There have been a total of 31 bishops in South Sudan to date. The bishops of South Sudan and Sudan are currently members of one single bishops' conference, designated as Sudan Catholic Bishops’ Conference.
Evangelization of Meghalaya began in the 19th century during the British era. In the 1830s, American Baptist Foreign Missionary Society had become active in Northeast to evangelize indigenous tribes to Christianity. Later, they were offered to expand and reach into Sohra Meghalaya, but they lacked the resources to do so and declined. Welsh Presbyterian Mission took the offer and they began work at Sohra mission field. By the early 1900s, other Protestant denominations of Christianity were active in Meghalaya. The outbreak of World Wars forced the preachers to return home to Europe and America. It is during this period that Catholicism took root in Meghalaya and neighbouring region. Currently, Catholics, Presbyterians and Baptists are three most common Christian denominations found in Meghalaya.
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.
