Demographics of atheism
Atheists comprised an estimated 2.01%, and non-religious a further 9.66% of the world population, according to The World Factbook in 2010. In East Asia, atheists and the irreligious are the majority. Outside of East Asia and some European countries atheist or non-believer percentages are typically in the single digits. The number of atheists is on the rise across the world, with religiosity generally declining.
Scientific assessment of the extent of "atheism" in various populations is beset with a number of problems. First in most of the world outside of East Asia the vast majority of the populations are believers in either a monotheistic or polytheistic system, typically being cited as 90% or more in countries like the United States or India. Consequently questions to assess non belief often take the form of any negation of the prevailing belief rather than an assertion of positive atheism and these will then be accounted, somewhat inaccurately, to rising "atheism".
Atheistic schools are found in early Indian thought and have existed from the times of the historical Vedic religion. Western atheism has its roots in pre-Socratic Greek philosophy, but did not emerge as a distinct world-view until the late Enlightenment.
- 1 Studies and statistics
- 2 Geographic distribution
- 2.1 Americas
- 2.2 Asia
- 2.3 Europe
- 2.4 Oceania
- 3 Income distribution
- 4 References
Studies and statistics
The demographics of atheism are substantially difficult to quantify. Different people interpret atheism and related terms differently, and it can be hard to draw boundaries between atheism, nonreligious beliefs, and nontheistic religious and spiritual beliefs. Furthermore, atheists may not report themselves as such, to prevent suffering from social stigma, discrimination, and persecution in some countries.
Because some governments have strongly promoted atheism and others have strongly condemned it, atheism may be either over-reported or under-reported for different countries. There is a great deal of room for debate as to the accuracy of any method of estimation, as the opportunity for misreporting (intentionally or not) a category of people without an organizational structure is high. Also, many surveys on religious identification ask people to identify themselves as "agnostics" or "atheists", which is potentially confusing, since these terms are interpreted differently, with some identifying themselves as being agnostic atheists. Additionally, many of these surveys only gauge the number of irreligious people, not the number of actual atheists, or group the two together. For example, research indicates that the fastest growing religious status may be "no religion" in the United States, but this includes all kinds of atheists, agnostics, and theists. Non-religious people make up 9.66%, while one fifth of them are atheists.
Statistics on atheism are often difficult to represent accurately for a variety of reasons. Atheism is a position compatible with other forms of identity. Some atheists also consider themselves Agnostic, Buddhist, Hindu, Jains, Taoist, or hold other related philosophical beliefs. Some, like Secular Jews and Shintoists, may indulge in some religious activities as a way of connecting with their culture, all the while being atheist. Therefore, given limited poll options, some may use other terms to describe their identity. Some politically motivated organizations that report or gather population statistics may, intentionally or unintentionally, misrepresent atheists. Survey designs may bias results due to the nature of elements such as the wording of questions and the available response options. Also, many atheists, particularly former Catholics and former Mormons, are still counted as Christians in church rosters, although surveys generally ask samples of the population and do not look in church rosters. Other Christians believe that "once a person is [truly] saved, that person is always saved", a doctrine known as eternal security. Statistics are generally collected on the assumption that religion is a categorical variable. Instruments have been designed to measure attitudes toward religion, including one that was used by L. L. Thurstone. This may be a particularly important consideration among people who have neutral attitudes, as it is more likely that prevailing social norms will influence the responses of such people on survey questions that effectively force respondents to categorize themselves either as belonging to a particular religion or belonging to no religion. A negative perception of atheists and pressure from family and peers may also cause some atheists to disassociate themselves from atheism. Misunderstanding of the term may also be a reason some label themselves differently.
For example, a Canadian poll released September 12, 2011 sampled 1,129 Canadian adults and came up with some interesting unrelated data on the numbers of declared atheists. These numbers conflicted with the latest Canadian census data that pre-supposed that a religious affiliation predisposed a belief in a deity and was based on a poorly worded question. A quote from the study:
The data also revealed some interesting facts about Canadians beliefs:
- A majority (53%) of Canadians believe in God. What is of particular interest is that 28% of Protestants, 33% of Catholics, and 23% of those who attend weekly religious services do not.
- One quarter (23%) of those with no religious identity still believe in God.
Luke Galen is an Associate Professor of Psychology at Grand Valley State University in Grand Rapids, Michigan, who uses the Big Five personality model. Galen says that he researches demographics of non-religious communities directly, rather than as a byproduct of investigating religious groups. One of Galen's studies attempted to control for demographics and church attendance; he found that members of secular organizations (like the international Center for Inquiry) have similar personality profiles to members of religious groups. Galen describes how members of secular organizations are very likely to label themselves primarily as "atheists", but also very likely to consider themselves humanists. Galen explains that secular group members show no significant differences in their negative or positive affect - meaning they are no more or less happy (in line with other research on religion and happiness). These members also have similar profiles for conscientiousness (discipline or impulse control, and acting on values like "pursuit of truth"). On the other hand, secular group members do tend to be less agreeable (e.g. more likely to hold unpopular, socially challenging views), as well as more open minded (e.g. more likely to consider new ideas) than members of religious groups. Galen writes "Many previously reported characteristics associated with religiosity are a function not of belief itself, but of strong convictions and group identification."
Legal and social discrimination against atheists in some places may lead some to deny or conceal their atheism due to fears of persecution. A 2006 study by researchers at the University of Minnesota involving a poll of 2,000 households in the United States found atheists to be the most distrusted of minorities, more so than Muslims, recent immigrants, gays and lesbians, and other groups. Many of the respondents associated atheism with immorality, including criminal behaviour, extreme materialism, and elitism. However, the same study also reported that, “The researchers also found acceptance or rejection of atheists is related not only to personal religiosity, but also to one’s exposure to diversity, education and political orientation—with more educated, East and West Coast Americans more accepting of atheists than their Midwestern counterparts.”
Though atheists are in the minority in most countries, they are relatively common in Europe, Canada, Australia, New Zealand, in former and present communist states, and to a lesser extent, in the United States (especially in New England) and the Southern Cone. A 2012 Pew Research study found 16 percent of the global population to be unaffiliated with a religion. It is difficult to determine actual atheist numbers. What is certain is that in some areas of the world (such as Europe and South America) atheism and secularization are increasing, and in other areas of the world (such as former Communist states like Russia), atheism is decreasing. This shifting data of these populations makes assessment difficult. Furthermore, the conflation of terms such as atheist, agnostic, non-religious and non-theist add to confusion among poll data. The numbers claimed for those who are religious always include children of religious parents who often have little choice in the matter. Most people who claim to be non-religious have done so after much consideration.
A 2002 survey by Adherents.com, which estimates the proportion of the world's people who are "secular, non-religious, agnostics and atheists" at about 14%. A 2004 survey by the BBC in 10 countries showed the proportion of the population "who don't believe in God" varying between 0% (Nigeria) and 39% (UK), with an average close to 17% in the countries surveyed. About 8% of the respondents stated specifically that they consider themselves to be atheists. 65% of those polled in a 2011 survey by the British Humanist Association answered no to the question "Are you religious?". A 2004 survey by the CIA in the World Factbook estimates about 12.5% of the world's population are non-religious, and about 2.4% are atheists. A 2004 survey by the Pew Research Center showed that in the United States, 12% of people under 30 and 6% of people over 30 could be characterized as non-religious. A 2005 poll by AP/Ipsos surveyed ten countries. Of the developed nations, people in the United States were most sure of the existence of God or a higher power (2% atheist, 4% agnostic), while France had the most skeptics (19% atheist, 16% agnostic). On the religion question, South Korea had the greatest percentage without a religion (41%) while Italy had the smallest (5%).
A study has shown atheism in the West to be particularly prevalent among scientists, a tendency already quite marked at the beginning of the 20th century, developing into a dominant one during the course of the century. In 1914, James H. Leuba found that 58% of 1,000 randomly selected U.S. natural scientists expressed "disbelief or doubt in the existence of God" (defined as a personal God which interacts directly with human beings). The same study, repeated in 1996, gave a similar percentage of 60.7%. Expressions of positive disbelief rose from 52% to 72%. (See also relationship between religion and science.)
The exact number of atheists in Canada is disputed. (See the section "Statistical problems" above) The Canadian Ipsos Reid poll released September 12, 2011 entitled "Canadians Split On Whether Religion Does More Harm in the World than Good," sampled 1,129 Canadian adults and came up 30% who do not believe in a god. Interestingly, the same poll found that 33% of respondents who identified themselves as Catholics and 28% Protestants said they didn't believe in a god.
An older poll shows 19–30% of the population holding an atheistic or agnostic viewpoint. The 2001 Canadian Census states that 16.2% of the population holds no religious affiliation, though exact statistics on atheism are not recorded. In urban centers this figure can be substantially higher; the 2001 census indicated that 42.2% of residents in Vancouver hold "no religious affiliation." A recent survey in 2008 found that 23% of Canadians said they did not believe in a god. The numbers do seem to suggest that the numbers of people in Canada who believe in a deity are dropping at a significant rate.
Separation of church and state is guaranteed by Article 130 of the Mexican Constitution, which also designates religious leaders as ineligible for public office, while the majority of the population identifies as Roman Catholic (82%).
Although the demographics of atheism and irreligion in Mexico is hard to measure because many atheists are officially counted as Catholic(source?), almost three million people in the 2000 National Census reported having no religion. Recent surveys have shown that only around 3% of Catholics attend church daily and, according to INEGI, the number of atheists grows annually by 5.2%, while the number of Catholics grows by 1.7%. The 2010 Mexican census by the INEGI (http://www.inegi.org.mx/sistemas/sisept/default.aspx?t=mrel01&c=27645&s=est) shows that 4.9% of Mexicans have no religion, up from 0.6% in 1960 and 3.5% in 2000.
According to Gallup, more than 9 in 10 Americans say "yes" when asked the basic question "Do you believe in God?"; this is down only slightly from the 1940s, when Gallup first asked this question. However, past Gallup surveys have shown that not all Americans are absolutely certain in their beliefs about God. Given the ability to express doubts about their beliefs, the percentage who stick to a certain belief in God drops into the 70% to 80% range. Additionally, when Americans are given the option of saying they believe in a universal spirit or higher power instead of in "God," about 12% choose the former. Still, the May 2011 poll reveals that when given only the choice between believing and not believing in God, more than 9 in 10 Americans say they do believe. Other indicators of religiosity in America have shown more dramatic changes in recent decades, most significantly Americans' self-identification with a religion. At some points in the 1950s, almost all Americans identified themselves with a particular religion. In recent years, more than 1 in 10 Americans tell survey interviewers they have no formal religious identity.
A 2004 BBC poll showed the number of people in the U.S. who don't believe in a god to be about 9–10%. A 2008 Gallup poll showed that a smaller 6% of the U.S. population believed that no god or universal spirit exists. The most recent ARIS report, released March 9, 2009, found in 2008, 34.2 million Americans (15.0%) claim no religion, of which 1.6% explicitly describes itself as atheist (0.7%) or agnostic (0.9%), nearly double the previous 2001 ARIS survey figure of 0.9%. The highest occurrence of "nones", according to the 2008 ARIS report, reside in Vermont, with 34% surveyed. According to a study conducted by Gallup in May 2010, 16% of Americans declared they have no religious affiliation.
Overall, U.S. Americans who profess no religion or self-identify as atheist or agnostic are more likely to be white or Asian and less likely to be black or Hispanic, as compared to the general adult population in U.S.
In the U.S., 55 percent of atheists are under age 35, while 30 percent are 50 and over (compared to 37 percent of the total population). As a group agnostics are older than atheists, though still younger than the general population. Comparing this 2001 data with the 1990 National Survey of Religious Identification (NSRI) provides evidence of a trend towards secularization among the younger American population.
In the U.S. men are more likely to be atheists than women, and also rate lower on various other measures of religiosity such as frequency of prayer.
"The analyses of the National Longitudinal Study of Adolescent Health (Study 1) and the General Social Surveys (Study 2) show that adolescent and adult intelligence significantly increases adult liberalism, atheism, and men's (but not women's) value on sexual exclusivity."
A 2012 study by the Pew Forum on Religion & Public Life reports:
The number of Americans who do not identify with any religion continues to grow at a rapid pace. One-fifth of the U.S. public – and a third of adults under 30 – are religiously unaffiliated today, the highest percentages ever in Pew Research Center polling.
In the last five years alone, the unaffiliated have increased from just over 15% to just under 20% of all U.S. adults. Their ranks now include more than 13 million self-described atheists and agnostics (nearly 6% of the U.S. public), as well as nearly 33 million people who say they have no particular religious affiliation (14%).
Irreligion in South America had increased for a period of 30 straight years, and it had a growing status in all countries in the first decade of the 21st century.
- Uruguay – 17.2% atheist or agnostic; 23.2% "believing in God but without religion"
- Argentina – 11.3% "indifferent towards religion" (including agnostic and atheists)
- Chile – 11.58% non-religious
- Ecuador – 7.94% atheist and 0.11% agnostic
- Brazil – 8.0% non-religious
- Colombia – 3% atheists, 12% atheists or agnostics
- Peru – 1.4% non-religious as of 1993
- Paraguay – 1.1% non-religious
- Venezuela – < 8%
In Brazil, non religious people rose from about 4% in the end of the 20th century to around 8% in the most recent reliable census and recent estimates put it in 10–14% of the population, being the 2nd largest group after Christianity. According to recent researches, Brazilians who profess no religion or self-identify as atheist or agnostic are more likely to be white Brazilian, Amerindian or Asian and less likely to be Afro-Brazilian or Pardo when compared to the general population.
There is evidence that the atheist minority is more likely to suffer prejudice than other groups: when asked for presidential candidates, in spite of major forms of racism, historical prejudices and racist-based classism against black people in the country, 83% of Brazilians would vote for an Afro-Brazilian; even with major forms of sexism present in Latin American societies (see machismo) 57% of Brazilians would vote for a woman president (the first one in the country's history is the present Dilma Roussef, elected in late 2010), and the historical homophobia (hate crimes practiced both by homophobic macho vigilantes and far-right skinheads as well, the latter widely common in White-majority Southern Brazil and São Paulo, for example) and major, widespread forms of heterosexism due also to the sexist machismo culture, 37% of Brazilians would vote for a gay candidate. Nevertheless, only 13% of Brazilians would vote for an atheist person to occupy the post of president without judging the candidate because of the candidate's religion. 6 in 10 Brazilians would not vote for an atheist president. A 2009 survey showed that atheists are the most hated demographic group in Brazil, among several other minorities polled, being almost on par with drug addicts. According to the research, 17% of the interviewees stated they feel either hate or repulse for atheists, while 25% feel antipathy and 29% are indifferent.
As happens with Brazilians of sexual minorities and/or members of traditional African diasporic religions — Umbanda, Candomblé and Quimbanda, collectively called Macumba, nowadays a pejorative term — or Spiritism, affiliation to some of the new rising Protestant churches in Brazil (mostly Evangelical or Pentecostal) can lead to even more negative social perceptions of atheist and irreligious people. Some critics present the widespread vision that Protestants are far less secularized, more intolerant and socially conservative than the Roman Catholic church as classist prejudice, an institution as large in Brazil as racism and sexism, although still not questioning that Catholic Brazilians are more tolerant and socially liberal.
East Asian cultures define religion differently from those in the West, making classification of certain adherents of Buddhism and Taoism particularly difficult, as belief in gods is generally absent in principle in these schools of thought except in syncretic outliers to the mainstreams of the belief system. Japan can be especially confusing, with most of the population incorporating practices from multiple religions into their lives (see Religion in Japan). In the People's Republic of China, 59% of the population claim to be non-religious. However, this percentage may be significantly greater (up to 80%) or smaller (down to 30%) in reality, because some Chinese define religion differently. Some Chinese define religion as practicing customs (which may be done for cultural or traditional reasons), while others define it as actually consciously believing their religion will lead to post-mortem salvation/reincarnation. According to the surveys of Phil Zuckerman on Adherents.com in 1993, 59% (over 700 million) of the Chinese population was irreligious and 8% – 14% was atheist (from over 100 to 180 million) as of 2005. (see Religion in China). In Vietnam, up to 81% of the population are atheists, agnostics, or non-believers; and the Vietnamese merely see their religions as a tradition rather than a belief (see Religion in Vietnam).
In Israel, around 50% of Israelis who were born ethnically Jewish consider themselves "secular" or hilonim, some of them still keep certain religious traditions for cultural reasons, but most are immersed within the secular Jewish culture. The number of atheists and agnostics is lower, and it stands at 15% to 37% respectively. The 2009 Avi-Chai study found 77% of Israeli Jews believe in a "higher power", while 46% define themselves as secular, of which 8% define themselves as "anti-religious". Conversely, the Fridman report for 2007 found that less than 20% define themselves as secular—and only 5% as anti-religious.
According to a 2010 Eurostat Eurobarometer poll, 51% of European Union citizens responded that "they believe there is a God", whereas 26% answered that "they believe there is some sort of spirit or life force" and 20% that "they do not believe there is a spirit, God, nor life force". Results were widely varied between different countries, with 94% of Maltese respondents stating that they believe in God, on the one end, and only 16% of Czechs stating the same on the other.
there is a God"
|"I believe there is some
sort of spirit or life force"
|"I don't believe there is any sort
of spirit, God or life force"
|Turkey (EU candidate)||94%||1%||1%|
|Croatia (joined EU in 2013)||69%||22%||7%|
|Iceland (EEA, not EU)||31%||49%||18%|
|Norway (EEA, not EU)||22%||44%||29%|
In 2001, the Czech Statistical Office provided census information on the ten million people in the Czech Republic. 59% had no religion, 32.2% were religious, and 8.8% did not answer. Next census in 2011 provided following figures: 34.2% not religious, 20.6% religious and 45.2% no answer.
In France, about 12% of the population reportedly attends religious services more than once per month. In a 2003 poll 54% of those polled in France identified themselves as "faithful," 33% as atheist, 14% as agnostic, and 26% as "indifferent." According to a different poll, 32% declared themselves atheists, and an additional 32% declared themselves agnostic.
Eastern Germany is perhaps the least religious region in the world.  Atheism is embraced by young and old, though even more so by younger Germans. One study in September 2012 was unable to find a single person under 28 who believed in a god. The popular explanation for this is the aggressive atheist policies of the German Democratic Republic. However, the atheist policies of East Germany's Socialist Unity Party of Germany only existed for the first few years. After that, the state allowed churches to have a relatively high level of autonomy. Also, the same high numbers of atheists don't exist in the other European countries that have a history of Soviet occupation, except for the Czech Republic and Estonia. Another explanation could be the secular movements during the Weimar Republic which were strongest in the states of Thuringia and Saxony. Also, it was the Protestant areas of the Eastern Bloc that tended to turn irreligious under Communist rule the most. The most atheist parts of the former Soviet bloc were usually once the most Protestant (East Germany, Estonia, and most of Latvia), and the Czech Republic is the only one that was once mainly Catholic.
A 2006 survey in the Norwegian newspaper Aftenposten (on February 17), saw 1,006 inhabitants of Norway answering the question "What do you believe in?". 29% answered "I believe in a god or deity", 23% answered "I believe in a higher power without being certain of what", 26% answered "I don't believe in God or higher powers" and 22% answered "I am in doubt". Still, As of December 2010[update], 78% of the population are members of the Norwegian state's official Lutheran Protestant church. All Norwegians with at least one parent who is a member are automatically registered as members at birth, so the vast majority of the members have done nothing actively to join, effectively creating an opt-out system where membership is not considered a serious statement of faith in Christianity, and one where many keep themselves enrolled for the sake of possibly wanting to have a ceremony in the church at some point in their life, without this necessarily implying belief.
There is a complex situation with atheism in Russia. According to a surveys of Levada Center, 22% of those surveyed self-described as non-religious, agnostic or atheist, with 69% describing themselves as Orthodox (and 5% Muslims) in Russia. Although just 10% regularly (at least once a month) attend church, the fact that there has been a substantial increase in the Orthodox proportion of the population, along with the fact that those who call themselves Christian are more likely to go to church, suggests that atheism and irreligion has greatly waned in Russia since the Soviet collapse.
Several studies have found Sweden to be one of the most atheist countries in the world. 23% of Swedish citizens responded that "they believe there is a God", whereas 53% answered that "they believe there is some sort of spirit or life force" and 23% that "they do not believe there is any sort of spirit, God, or life force". This, according to the survey, would make Swedes the third least religious people in the 27-member European Union, after Estonia and the Czech Republic.
According to a study carried out by doctor in political science Simon Geissbühler, Swiss atheists tend to be more left-leaning, even accounting for age and income, than the average Swiss population.
In the United Kingdom, a 2007 survey found 15% of the population attends church more than once per month. A poll in 2004 by the BBC put the number of people who do not believe in a God at 39%, while a YouGov poll in the same year put the percentage of non-believers at 35% with 21% answering "Don't Know". In the YouGov poll men were less likely to believe in a god than women, 39% of men as opposed to 49% of women, and younger people were less likely to believe in a god than older people.
In early 2004, it was announced that atheism would be taught during religious education classes in England. A spokesman for the Qualifications and Curriculum Authority stated: "There are many children in England who have no religious affiliation and their beliefs and ideas, whatever they are, should be taken very seriously." There is also considerable debate in the UK on the status of faith-based schools, which use religious as well as academic selection criteria. A 2009 study reported that two thirds of teenagers in the UK do not believe in God.
In the 2011 Census, 14.1 million people, about a quarter of the entire population (25%) of England and Wales, said they had no religion, a rise of 6.4 million since 2001. In Scotland, more than one third of the population (37%) stated that they had no religion. The British Humanist Association (BHA) had encouraged people to tick the "No religion" box and said the fall was "astounding". It has calculated that Christians could be in a minority by 2018.
In the Australian 2011 Census of Population and Housing, in the question which asked "What is the person's religion?" 22.3% reported "no religion", which is a growth of 7% since the 2001 Census. This question was optional and 9.4% did not answer the question. There are often popular and successful campaigns to have people describe themselves as non-mainstream religions (e.g. Jedi).
In 2006, the New Zealand census asked, "What is your religion?" 34.7% of those answering indicated no religion. 12.2% did not respond or objected to answering the question. The New Zealand Atheist Bus Campaign of 2009 is largely regarded as one of the most successful atheist campaigns of all time.
- "The World Fact Book: Religions". World Fact Book. Retrieved 8 June 2013.
- "Millennials losing faith in God" Huffington Post. The actual Pew survey question is "Do you never doubt god's existence?"
- Pew survey
- Not all Nonbelivers Call Themselves Atheists Pew Survey 2009
- Pandian (1996). India, that is, sidd. Allied Publishers. p. 64. ISBN 978-81-7023-561-3. Retrieved 2011-04-09.
- Baggini 2003, pp. 73–74. "Atheism had its origins in Ancient Greece but did not emerge as an overt and avowed belief system until late in the Enlightenment."
- International Humanist and Ethical Union. "The Fate of Infidels and Apostates under Islam". Iheu.org. Retrieved 2012-02-05.
- "American Nones: The Profile of the No Religion Population". American Religious Identification Survey. 2008. Retrieved 19 October 2012.[dead link]
- "'No Religion' on the Rise: One-in-Five Adults Have No Religious Affiliation". Pew Forum on Religion & Public Life. 9 October 2012. Retrieved 19 October 2012.
- Calvin, John: Institutes.
- "Canadians divided on whether religion does more harm than good: poll". Shaw Media Inc. Retrieved 31 December 2011.
- "Center Stage Podcast, Episode 104 - Profiles of the Godless: Results from the Non-Religious Identification Survey, Luke Galen". Centerforinquiry.net. 2011-12-05. Retrieved 2012-02-05.
- [Personality and social integration factors distinguishing nonreligious from religious groups: The importance of controlling for attendance and demographics, 2011, Luke Galen and Jim Kloet, Archive for the Psychology of Religions]
- "Atheists identified as America’s most distrusted minority, according to new U of M study". UMN News. Retrieved 2006-03-22.
- Goodstein, Laurie (18 December 2012). "Study Finds One in 6 Follows No Religion". The New York Times. Retrieved 29 January 2013.
- "Major Religions of the World Ranked by Number of Adherents". Adherents.com. Retrieved 2006-03-05.
- "UK among most secular nations". BBC News. 2004-02-26. Retrieved 2005-03-05.
- "Two-thirds of Britons not religious, suggests survey". BBC News. 2011-03-21.
- "CIA World Factbook". Retrieved 2006-03-05.
- "Part 8: Religion in American Life: The 2004 Political Landscape". Pew Research Center. Retrieved 2006-03-05.
- "AP/Ipsos Poll: Religious Fervor In U.S. Surpasses Faith In Many Other Highly Industrial Countries". 2005. Retrieved 2006-03-05.
- Larson, Edward J.; Larry Witham (1998). "Leading scientists still reject God". Nature (Macmillan Publishers Ltd.) 394 (6691): 313–4. doi:10.1038/28478. PMID 9690462.
- Scott, Eugenie (1998). "Do Scientists Really Reject God?". Reports of the National Center for Science Education 18 (2): 24–25.
- "Religion data from the 2001 Canadian census". Ontario Consultants on Religious Tolerance. Retrieved 2007-10-17.
- "2001 Community Profiles". statcan.ca. 2002-03-12. Retrieved 2012-02-05.
- Timothy Avery (2008-05-31). "One in four don't believe in God, poll finds". Toronto: Thestar.com. Retrieved 2012-02-05.
- "CIA MSN Encarta, Mexico". Archived from the original on 2009-10-31. Retrieved 2007-07-06.
- "Religión" (PDF). Censo Nacional de Población y Vivienda 2000. INEGI. 2000. Retrieved 2 August 2009.
- http://books.google.com/books?isbn=0195107845. Missing or empty
- "Aciprensa". Aciprensa. 2012-01-25. Retrieved 2012-02-05.
- "Mexico still Catholic, but number of atheists on the rise". Catholic News Agency. 2008-03-26. Retrieved 2012-02-05.
- "Belief in God Far Lower in Western U.S". Gallup.com. Retrieved 2012-02-05.
- "American Religious Identification Survey". Retrieved 2006-03-05.
- "American Religious Identification Survey(ARIS 2008)". Retrieved 2009-03-20.
- Newport, Frank. "In U.S., Increasing Number Have No Religious Identity". Retrieved 4 May 2012.
- "See how U.S. religious landscape has changed in nearly 2 decades". USA Today. 2009-03-09. Retrieved 2010-05-01.
- "Statistics on Religion in America Report - Pew Forum on Religion & Public Life". Religions.pewforum.org. 2007-08-13. Retrieved 2012-02-05.
- Kosmin, Keysar Secularism & secularity: contemporary international perspectives, by Barry Alexander Kosmin, Ariela Keysar
- Kosmin Kosmin, BA. The National Survey of Religious Identification. New York: CUNY Graduate Center, 1991.
-  The Stronger Sex -- Spiritually Speaking, Pew Forum On Religion and Public Life
- Santoshi Kanazawa, Why Liberals and Atheists Are More Intelligent, Social Psychology Quarterly, Vol. 73, No. 1, 33–57 (2010)
- "2006 State-sponsored National Survey on Religion" (PDF). Retrieved 2012-02-05.
- "Recent national official statistics" (PDF). Retrieved 2012-02-05.
- "2012 census data" (PDF). Retrieved 2012-02-05.
- (Spanish) El 80% de ecuatorianos es católico
- (Spanish) El 80% de los ecuatorianos afirma ser católico, según el INEC
- "2010 Census data" (PDF). Retrieved 2012-06-29.
- Glottman, Dora. "Probablemente Dios no existe, eso cree el 3% de los colombianos". Noticias Caracol. Retrieved 8 June 2013.
- "1993 census data". Inei.gob.pe. Retrieved 2012-02-05.
- "2002 census data". Dgeec.gov.py. Retrieved 2012-02-05.
- "Venezuela - International Religious Freedom Report 2008". Retrieved 2013-03-20.
- (Portuguese) How can be the everyday life of a family with no faith. iG web portal citing Folha de S. Paulo data, 2011.
- (Portuguese) Study Panorama of religions. Fundação Getúlio Vargas, 2003.
- (Portuguese) Veja magazine – How faith resists unbelief. Veja magazine, edition 2040, 2007.
- "Ateus e drogados são os mais odiados pelos brasileiros". Paulopes.com.br (in Portuguese). May 3, 2009. Retrieved August 4, 2013.
- (Portuguese) Época magazine – the hard life of atheists in an increasing "Evangelical" (Protestant) Brazil. Época magazine, 2011.
- (Portuguese) Rafael Galvão – these "differentiated people" and their oh-so-not amicable religions. Rafael Galvão's critic blog, 2011.
- "China – People". World Desk Reference. Retrieved 2007-01-01.
- "Adherents.com". Adherents.com. Retrieved 2012-02-05.
- Top 50 Countries With Highest Proportion of Atheists / Agnostics (Zuckerman, 2005) Source: Zuckerman, Phil. "Atheism: Contemporary Rates and Patterns", chapter in The Cambridge Companion to Atheism, ed. by Michael Martin, Cambridge University Press: Cambridge, UK (2005).
- "Average intelligence predicts atheism rates across 137 nations". 3 January 2008. Retrieved 2012-10-21.
- "80% of Jews Believe in God - Ynet (Hebrew)". Ynet. 1995-06-20. Retrieved 2012-02-05.
- http://www.adherents.com/largecom/com_atheist.html Top 50 Countries With Highest Proportion of Atheists / Agnostics
- "Special Eurobarometer, biotechnology, page 381" (PDF). Fieldwork: Jan-Feb 2010.
- "Eurostat poll on the social and religious beliefs of Europeans" (PDF). Retrieved 2006-05-10.
- "Obyvatelstvo podle náboženského vyznání a pohlaví podle výsledků sčítání lidu v letech 1921, 1930, 1950, 1991 a 2001". Retrieved 2007-02-23.
- "Obyvatelstvo podle náboženské víry podle krajů". Retrieved 2013-03-18.
- U.S. Bureau of Democracy, Human Rights, and Labor. "International Religious Freedom Report 2004". Retrieved 2006-03-05.
- "Religious Views and Beliefs Vary Greatly by Country, According to the Latest Financial Times/Harris Poll". Financial Times/Harris Interactive. 2006-12-20. Retrieved 2007-01-17.
- "WHY EASTERN GERMANY IS THE MOST GODLESS PLACE ON EARTH". Die Welt. 2012. Retrieved 2009-05-24.
- "East Germany the "most atheistic" of any region". Dialog International. 2012. Retrieved 2009-05-24.
- "Only the Old Embrace God in Former East Germany". Spiegel Online. 2012. Retrieved 2009-05-24.
- Thompson, Peter (2012-09-22). "East German atheism can be seen as a form of continuing political and regional identification – and a taste of the future.". London: guardian.co.uk. Retrieved 2012-09-24.
- "Eastern Germany: the most godless place on Earth". theguardian. 2012. Retrieved 2009-05-24.
- "KOSTRA: kirke, 2010" (in norwegian). Statistisk sentralbyrå. 2011-06-20. Retrieved 2011-12-30.
- "Религиозная вера в России". Levada.ru. 2011-09-26. Retrieved 2012-02-05.
- "Barómetro February 2013, Centro de Investigaciones Sociológicas, Page 22" (PDF).
- "Religion, no political values? political attitudes of atheist comparison". Jsri.ro. Retrieved 2012-02-05.
- "Church attendance in the UK survey". Tearfund. Retrieved 2010-02-18.
- "What The World Thinks Of God" (PDF). BBC News.
- "Telegraph YouGov poll" (GIF). The Daily Telegraph (London). Archived from the original on March 4, 2006. Retrieved 2006-03-05.
- Hinsliff, Gaby (2004-02-15). "Children to study atheism at school". London: The Observer. Retrieved 2005-03-05.
- "Two thirds of teenagers don't believe in God – Telegraph". London: Telegraph. 2009-06-22. Retrieved 2009-06-28.
- Booth, Robert (2012-12-12). "Census reveals decline of Christianity - Guardian". London: Guardian. Retrieved 2012-12-12.
- "Religion by Year". British Social Attitudes Surveys. 2007. Retrieved 2009-05-24.
- Australian Bureau of Statistics, Census of Population and Housing, 2011, Cultural Diversity in Australia
- Statistics New Zealand, QuickStats About Culture and Identity, Religious affiliation
- "Religious affiliation (total responses) for the census usually resident population count, 2006". Archived from the original on January 24, 2007. Retrieved 2007-03-29.
- (Pew 2002; Norris and Inglehart 2004; Gallup 2005b 2006a, b) Zuckerman