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Religious Adherents, 2010 (World Christian Database)1

Belgium Western Europe World
Baha'i <0.1% <0.1% 0.1%
Buddhist 0.2% 0.4% 7.2%
Chinese Universalist <0.1% 0.1% 6.3%
Christian 71.5% 69.1% 32.8%
Confucianist <0.1% <0.1% 0.1%
Ethnoreligionist <0.1% <0.1% 3.5%
Hindu <0.1% 0.2% 13.8%
Jain <0.1% <0.1% <0.1%
Jewish 0.3% 0.4% 0.2%
Muslim 5.3% 6.1% 22.5%
Shintoist 0.0% 0.0% <0.1%
Sikh <0.1% <0.1% 0.3%
Spiritist <0.1% <0.1% 0.2%
Taoist 0.0% 0.0% 0.1%
Zoroastrian <0.1% <0.1% <0.1%
Neoreligionists <0.1% 0.1% 0.9%
Atheist 2.1% 2.9% 2.0%
Agnostic 20.3% 20.6% 9.8%

Religious Demography2

The country has an area of 11,780 square miles and a population of 10.5 million.

The Government does not keep statistics listing religious affiliation, but the population is predominantly Roman Catholic. According to a 2007 report of the King Baudouin Foundation (KBF), 4.8 million inhabitants identify themselves as Catholic. Earlier statistics indicated that the number of nonbelievers is 924,000, and the number of those who identify themselves as belonging to the nonreligious philosophical community is 892,500.

The KBF Report gives the number of adherents belonging to smaller religious groups as follows: Islam, 400,000; Protestantism, 132,000; Orthodox, 70,000; Judaism, 50,000; Anglicanism 10,800, and organized secular humanism, 110,000. The larger nonrecognized religious groups include Jehovah's Witnesses with 23,701 baptized and 50,000 "churchgoers;" independent Protestant congregations, 10,000; Buddhists, 10,000; members of the Church of Jesus Christ of Latter-day Saints (Mormons), 4,000; Seventh-day Adventists, 2,000; Hindus, 5,000; Sikhs, 3,000; Hare Krishnas, 1,500; and the Church of Scientology, 200-300.

A 2008 Catholic University of Leuven report estimated that 7 percent of the Catholic population regularly attends religious services. Fifty-seven percent of the children born in the country are baptized, 26.7 percent of couples opt for a religious marriage, and 61 percent of funerals include religious services.


Note: The World Christian Database (WCD) estimates, used in the Religious Adherents section above, count each person as belonging to a maximum of one religious group. For more information, see the WCD methodology document. The U.S. State Department's International Religious Freedom report estimates, used in the Religious Demography section, use less restrictive criteria in which a person who identifies with more than one religion is classified as a follower of each. In certain cases (such as Japan and other nations with strong folk religion traditions), this can cause counts to vary widely between estimates. Users are advised to consult the relevant source documents before determining which counts to cite.

1.  The World Christian Database (WCD) is based on the 2600-page award-winning World Christian Encyclopedia and World Christian Trends, first published in 1982 and revised in 2001. This extensive work on World religion is now completely updated and integrated into the WCD online database. Designed for both the casual user and research scholar, information is readily available on religious activities, growth rates, religious literature, worker activity, and demographic statistics. Additional secular data is incorporated on population, health, education, and communications. A dataset with these and the other international measures highlighted on the country pages can be downloaded from this website. Used with permission.

2.  The U.S. State Department's International Religious Freedom Report is submitted to Congress annually by the Department of State in compliance with Section 102(b) of the International Religious Freedom Act (IRFA) of 1998. This report supplements the most recent Human Rights Reports by providing additional detailed information with respect to matters involving international religious freedom. It includes individual country chapters on the status of religious freedom worldwide. A dataset with these and the other international measures highlighted on the country pages can be downloaded from this website. These State Department reports are open source.

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