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Religious Affiliation

Individuals identify with particular religious traditions for theological, doctrinal, cultural or other reasons. Explore Pew Forum publications—including public opinion polls, demographic reports, research studies, event transcripts and interviews—about various faiths and their members.

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The Global Religious Landscape
A country-by-country analysis of data from more than 2,500 censuses, surveys and population registers finds that 84% of adults and children around the globe are religiously affiliated. The study also finds that the median age of two major groups – Muslims (23 years) and Hindus (26) – is younger than the world’s overall population (28), while Jews have the highest median age (36).

 

Affiliations: 

Christian  Muslim  Unaffiliated 
Jewish  Other Affiliations   
Religious Groups' Official Positions on Same-Sex Marriage
In recent years, same-sex marriage has been a contentious subject within many religious groups in the U.S. Here is an overview of where 16 religious groups stand on this issue.  
Catholics’ Views of U.S. Bishops
The U.S. Conference of Catholic Bishops will meet in Baltimore for their annual Fall General Assembly on Nov. 12-15. Seven-in-ten Catholics say they are very (24%) or somewhat satisfied (46%) with the leadership of the American bishops, according to a Pew Research Center Survey.
The Catholic “Swing” Vote
Catholics are often identified as a major "swing" voting group in American politics. A new analysis shows that the only group of Catholics that has been divided in recent elections is white Catholics who identify as political moderates.
“Nones” on the Rise
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. 
Controversies Over Mosques and Islamic Centers Across the U.S.
An interactive map shows the locations of 53 proposed mosques and Islamic centers that have encountered community resistance (for both religion- and non-religion-related reasons) in recent years.
Mormonism in the 2012 Election
A new slideshow highlights recent Pew Research Center data on voters’ views of the Mormon religion and Mormons’ opinions on their place in society.
Ramadan Observances Set to End
A new Pew Forum survey of Muslims in 39 countries and territories around the world finds that fasting during Ramadan is widely observed, with a median of 93% of Muslims saying they abstain from food and drink during the day.
The World's Muslims: Unity and Diversity
The world’s Muslims are united in their belief in God and the Prophet Muhammad and are bound together by such religious practices as fasting during Ramadan and almsgiving to assist the needy. But they have widely differing views about other aspects of their faith, including how important religion is to their lives, who counts as a Muslim and what practices are acceptable in Islam.
Catholics’ Views on U.S. Nuns
On Aug. 7, the Leadership Conference of Women Religious, an organization that represents U.S. nuns, will meet in St. Louis to discuss how to respond to recent criticism from the Vatican, the Associated Press reports.  A Pew Research Center survey finds that eight-in-ten American Catholics (83%) are satisfied with the leadership provided by Catholic nuns and sisters.
Catholics Share Bishops’ Concerns about Religious Liberty
A new survey report finds that Catholics who are aware of U.S. bishops’ concerns about restrictions on religious liberty generally agree with the bishops’ concerns. Yet there are no significant differences in the presidential vote preferences between Catholic voters who have heard about the bishops’ protests and those who have not.
Asian Americans: A Mosaic of Faiths
When it comes to religion, the Asian-American community is a study in contrasts, encompassing groups that run the gamut from highly religious to highly secular. A new survey report examines the Asian-American population from the angle of religious affiliation, highlighting the beliefs, practices and views of Christians, Buddhists, Hindus, the religiously unaffiliated and other faiths. 
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