The U.S. Government estimates the total population at 3.1 million (midyear 2020 estimate). According to the most recent census conducted in 2011, Sunni Muslims constitute nearly 57 percent of the population, Roman Catholics 10 percent, members of the Autocephalous Orthodox Church of Albania nearly 7 percent, and members of the Bektashi Order (a form of Shia Sufism) 2 percent. Other groups include Protestant denominations, Baha’is, Jehovah’s Witnesses, The Church of Jesus Christ of Latter-day Saints, and a small Jewish community. Nearly 20 percent of respondents declined to answer an optional census question about religious affiliation.

The U.S. government estimates the total population at 7.0 million (midyear 2020 estimate). According to the 2011 census (the most recent), 76 percent of the population identifies as Eastern Orthodox Christian, primarily affiliated with the BOC. The census reports Muslims, the second largest religious group, are approximately 10 percent of the population, followed by Protestants at 1.1 percent and Roman Catholics at 0.8 percent. Nearly 95 percent of Muslims reported being Sunni; most of the rest are Shia, and there is a small number of Ahmadis concentrated in Blagoevgrad. Orthodox Christians of the Armenian Apostolic Orthodox Church, Jews, Jehovah’s Witnesses, members of the Church of Jesus Christ, Sri Chinmoy, and other groups together make up 0.2 percent of the population. According to the census, 4.8 percent of respondents have no religion and 7.1 percent did not specify a religion. According to a 2019 report by the think tank Agency for Social Analyses, 74 percent of individuals identify as Orthodox Christians, 10 percent as Muslims, 13 percent as atheists, and 3 percent with other religious traditions.

Some religious minorities are concentrated geographically. Many Muslims, including ethnic Turks, Roma, and Pomaks (descendants of Slavic Bulgarians who converted to Islam under Ottoman rule) live in the Rhodope Mountains along the southern border with Greece and Turkey. Ethnic Turkish and Romani Muslims also live in large numbers in the northeast and along the Black Sea coast. Some recent Romani converts to Islam live in towns in the central region, such as Plovdiv and Pazardjik. According to the census, nearly 40 percent of Catholics live in and around Plovdiv. The majority of the small Jewish community lives in Sofia, Plovdiv, and along the Black Sea coast. Protestants are widely dispersed. Many Roma are Protestant converts, and Protestants are more numerous in areas with large Romani populations. Approximately 80 percent of the urban population and 62 percent of the rural population identifies as Orthodox Christian. Approximately 25 percent of the rural population identifies as Muslim, compared with four percent of the urban population.

The U.S. government estimates the total population at 10.7 million (midyear 2020 estimate). According to the 2011 census, of the 56 percent of citizens who responded to the question about their religious beliefs, approximately 62 percent held none, 18 percent were Roman Catholic, 12 percent listed no specific religion, and 7 percent identified with a variety of religious faiths, including the Evangelical Church of Czech Brethren, the Czechoslovak Hussite Church, other Christian churches, Judaism, Islam, and Buddhism. Academics estimate there are 10,000 Jews, while the FJC estimates there are 15,000 to 20,000. Leaders of the Muslim community estimate there are 10,000 Muslims, most of whom are immigrants. According to a 2017 Pew Research Survey, 72 percent of adults in the country do not identify with a religious group, and 25 percent identify as atheists.

The U.S. government estimates the total population at 1.2 million (midyear 2020 estimate). According to the 2011 census (the most recent data available), 29 percent of the population is religiously affiliated, 54 percent do not identify with any religion, and 17 percent do not state an affiliation. According to the Estonian Council of Churches data from December 2019, 13.8 percent of the population belong to the Estonian Evangelical Lutheran Church, while 13.1 percent belong to the Estonian Orthodox Church of Moscow Patriarchate (EOCMP), and 2.3 percent belong to the Estonian Apostolic Orthodox Church. The Union of Free Evangelical and Baptist Churches of Estonia and the Roman Catholic Church in Estonia together comprise 1 percent of the population. Other Christian groups, including Jehovah’s Witnesses, Pentecostals, Methodists, Seventh-day Adventists, and Russian Old Believers, collectively constitute 1.1 percent of the population. According to the 2011 census, there are small Jewish and Muslim communities of 2,500 members and 1,500 members, respectively. Most religious adherents among the Russian-speaking population belong to the EOCMP and reside mainly in the capital or the northeastern part of the country. According to 2011 census data, most of the country’s community of Russian Old Believers lives along the west bank of Lake Peipsi in the eastern part of the country.

The U.S. government estimates the total population at 9.8 million (midyear 2020 estimate). According to the 2011 national census, which included an optional question on religious affiliation, of the 73 percent of the population that responded, 51 percent identified as Roman Catholic, 16 percent as Hungarian Reformed Church (Calvinist), 3 percent as Lutheran, 2 percent as Greek Catholic, and less than 1 percent as Jewish; 23 percent reported no religious affiliation, and 2 percent said they were atheists. Other religious groups together constituting less than 5 percent of the population include Greek Orthodox, the Faith Congregation (a Pentecostal group), the Church of Scientology (COS), Russian and other Orthodox Christian groups, other Christian denominations, Buddhists, Muslims, and the Hungarian Society for Krishna Consciousness. The Hungarian Evangelical Brotherhood (MET) has approximately 8,500 members, according to a 2013 news report, and the Hungarian Pentecostal Church approximately 9,300 members, according to the 2011 census. The World Jewish Congress estimates the Jewish population to be between 35,000 and 120,000 persons. Local Jewish organizations estimate approximately 100,000 citizens with Jewish heritage live in the country, primarily in Budapest. Other religious groups are distributed throughout the country.

Other religious groups that together constitute less than 5 percent of the religious population include Jews, Buddhists, the International Society of Krishna Consciousness, Baha’is, and Scientologists.

The U.S. government estimates the total population at 1.9 million (midyear 2020 estimate). According to the Annual Report of Religious Organizations and their Activities published by the Ministry of Justice (MOJ), based on 2019 data, the largest religious groups are Lutheran (37 percent), Roman Catholic (18 percent), and Latvian Orthodox Christian (13 percent), the latter predominantly native Russian speakers. Thirty-one percent of the population is unaffiliated with any religious group. The Latvian Orthodox Church is a self-governing Eastern Orthodox Church under the jurisdiction of the Moscow Patriarchate. The Central Statistical Bureau reports there are 4,436 persons who identify as Jewish, and the Council of Jewish Communities believes there are around 8,200 persons with Jewish heritage. The Muslim community reports approximately 1,000 Muslims resident in the country, while the MOJ’s report of religious organizations lists 58 active members in three Muslim congregations. Separately, there is a small Ahmadi Muslim community. Other religious groups, which together constitute less than 5 percent of the population, include Baptists, Pentecostals, Seventh-day Adventists, Old Believers, evangelical Christians, Methodists, Calvinists, and The Church of Jesus Christ of Latter-day Saints (Church of Jesus Christ).

The U.S. government estimates the total population at 2.7 million (midyear 2020 estimate). According to the 2011 census, of the 90 percent of the population that responded to a question regarding religious affiliation, 86 percent identify as Roman Catholic, and 7 percent do not identify with any religious group. Religious groups that together constitute less than five percent of the population include Russian Orthodox, Old Believers, Lutherans, Evangelical Reformed, Jews, Muslims, Greek Catholics, Karaite Jews, Jehovah’s Witnesses, members of the Full Gospel Word of Faith Movement, Pentecostals/Charismatics, Old Baltic faith communities, Baptists, Seventh-day Adventists, Methodists, and members of the New Apostolic Church, and the Church of Jesus Christ of Latter-day Saints.

In the 2011 census, approximately 5,100 persons identified as followers of Romuva, a religion practiced in the country since before the introduction of Christianity. According to the census, the Jewish population is predominately concentrated in larger cities and is estimated at 3,300, of whom approximately 250 are Karaite Jews, who traditionally live in Trakai and in the greater Vilnius region. The Sunni Muslim population numbers approximately 2,800, the majority of whom are Tatars, a community living primarily in Vilnius and Kaunas. The Muslim community also includes recent converts, migrants, refugees, and temporary workers from the Middle East and Africa, most of whom are Sunni.

The U.S. government estimates the population at 21.3 million (midyear 2020 estimate). According to a 2011 government census, ROC adherents constitute 86.5 percent of the population and Roman Catholics almost 5 percent. According to the census, there are approximately 151,000 Greek Catholics; however, Greek Catholics estimate their numbers at 488,000. According to the Greek Catholic Church, since the time of the census, a significant number of persons whose Greek Catholic families were forced to covert during the Communist regime rediscovered their roots and joined the Greek Catholic Church. Other religious groups include Old Rite Russian Christians; Protestants, including Reformed Protestants, Pentecostals, Baptists, Seventh-day Adventists, Evangelical Lutherans, and Evangelical Augustans; Jews; Muslims; Jehovah’s Witnesses; Baha’is; The Church of Jesus Christ of Latter-day Saints; Zen Buddhists; the Family (God’s Children); the Family Federation for World Peace and Unification (Unification Church); the Church of Scientology; and the International Society of Krishna Consciousness. Atheists and nonbelievers represent less than 1 percent of the population.

According to the 2011 census, Old Rite Russian Christians are mainly located in Moldavia and Dobrogea. Of the 64,337 Muslims accounted for in the 2011 census, 43,279 live in the southeast near Constanta. Most Greek Catholics reside in Transylvania. Protestants of various denominations and Roman Catholics reside primarily in Transylvania. Orthodox and ethnic Ukrainian Greek Catholics live mostly in the north. Orthodox ethnic Serbs are primarily in Banat. Members of the Armenian Apostolic Church are concentrated in Moldavia and the south. Virtually all members of the Protestant Reformed and Unitarian Churches of Transylvania are ethnic Hungarians. More than half of the Roman Catholic and Evangelical Lutheran Churches in Transylvania are composed of ethnic Hungarians. Approximately 40 percent of the country’s Jewish population of 3,400 resides in Bucharest.

The U.S. government estimates the total population at 142.3 million (midyear 2020 estimate). A poll conducted in September by the independent Levada Center found that 63 percent of the population identified as Orthodox Christian and 7 percent as Muslim, while 26 percent reported having no religious faith. Religious groups each constituting approximately one percent or less of the population include Buddhists, Protestants, Roman Catholics, Jews, members of The Church of Jesus Christ of Latter-day Saints (Church of Jesus Christ), Jehovah’s Witnesses, Hindus, Baha’is, members of the International Society of Krishna Consciousness (ISKCON), pagans, Tengrists, members of the Church of Scientology, and Falun Gong practitioners. The 2010 census estimates the number of Jews at 150,000. The Russian Jewish Congress (RJC) estimates the Jewish population is 172,500, while the Federation of Jewish Communities assesses there are approximately 1.5 million persons of Jewish heritage. According to Mufti Ravil Gaynutdin, chairman of the Religious Board of Muslims of the Russian Federation, there were 25 million Muslims in 2018, approximately 18 percent of the population. Immigrants and migrant workers from Central Asia, which experts estimate at six to seven million, are mostly Muslim. Most Muslims live in the Volga-Ural Region and the North Caucasus. Moscow, St. Petersburg, and parts of Siberia also have sizable Muslim populations.

The U.S. government estimates the total population at 30.6 million (midyear 2020 estimate). According the Uzbekistan government, the population as of October 2020 was close to 34 million. According to U.S. government estimates, 88 percent of the population is Muslim, while the Ministry of Foreign Affairs estimates 96 percent of the population is Muslim. Most Muslims are Sunni of the Hanafi school. The government states that approximately 1 percent of the population is Shia of the Jaafari school, concentrated in the provinces of Bukhara and Samarkand. Approximately 2.2 percent of the population is Russian Orthodox, compared with 3.5 percent in 2019; according to reports and statistics; this number continues to decline with the emigration of ethnic Russian and other Orthodox persons. The government states that the remaining 1.8 percent of the population includes small communities of Catholics, ethnic Korean Christians, Baptists, Lutherans, Seventh-day Adventists, evangelical Christians, Pentecostals, Jehovah’s Witnesses, Buddhists, Baha’is, members of the International Society of Krishna Consciousness, and atheists. According to members of the Jewish community, the Jewish population – a mix of Ashkenazi and Sephardic (Bukharian) – Jews, numbers fewer than 10,000. Of those, approximately 6,000 Ashkenazi and fewer than 2,000 Bukharian Jews live in Tashkent, Bukhara, Samarkand, and the Fergana Valley. The Jewish population continues to decline because of emigration.