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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).

 

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GRAPHIC March 1, 2012
Catholics in Mexico and Cuba
Pope Benedict XVI will travel to Latin America March 23-28 for a much-anticipated visit to Mexico and Cuba. An infographic based on data from a 2011 demographic study by the Pew Research Center's Forum on Religion & Public Life explores information on Catholics in Latin America, with a particular focus on the Catholic population in Mexico and Cuba. 
GRAPHIC January 12, 2012
Infographic: Mormons in America
A poster-style infographic highlights U.S. Mormons' political views and other key findings from the Pew Forum's new report, Mormons in America.
GRAPHIC August 30, 2011
Infographic: Muslim Americans
This slideshow highlights some of the findings from the new report, Muslim Americans: No Signs of Growth in Alienation or Support for Extremism.
GRAPHIC April 28, 2011
National Day of Prayer
A federal appeals court recently overturned a lower court ruling that had declared the National Day of Prayer to be unconstitutional. The day of prayer, established by Congress in 1952, occurs annually on the first Thursday in May, which this year falls on May 5.
ANALYSIS January 5, 2011
Faith on the Hill
The political overhaul of the U.S. Congress after the 2010 elections appears to have had little effect on the religious composition of the legislative body, which is similar to the religious makeup of the previous Congress and of the nation, according to an analysis by the Pew Forum.
GRAPHIC November 4, 2010
Muslim Population of Indonesia
President Barack Obama is scheduled to visit Indonesia Nov. 9-10 as part of a 10-day trip to Asia. A new Pew Forum graphic shows that Indonesia is the country with the world's largest Muslim population (205 million).
GRAPHIC October 7, 2010
Hispanic Protestants Closely Divided Heading Into 2010 Elections; Hispanic Catholics Favor Democrats
A new survey by the Pew Hispanic Center, a project of the Pew Research Center, shows that Hispanic registered voters currently support Democratic candidates by a three-to-one margin in the upcoming midterm elections (65% vs. 22%). The survey data show, however, that there is a sharp divide between Hispanics who identify their religion as Catholic and those who identify as Protestant.
GRAPHIC June 18, 2009
About One-in-Six Americans Are Baptist
The U.S. Religious Landscape Survey, conducted by the Pew Research Center's Forum on Religion & Public Life, finds that Baptists represent the largest Protestant denominational family in the U.S., making up about one-sixth (17.2%) of the total U.S. adult population.
GRAPHIC June 11, 2009
Most Latino Evangelicals Pray Every Day
The Pew Forum's U.S. Religious Landscape Survey finds that Hispanic evangelicals, like other evangelicals, are more likely to pray every day than the population overall. Hispanic evangelicals are also more likely to pray daily than Hispanics who belong to other major religious groups.
ANALYSIS June 4, 2009
Brides, Grooms Often Have Different Faiths
Data from the U.S. Religious Landscape Survey, conducted by the Pew Research Center's Forum on Religion & Public Life in 2007, shows that many marriages are between people of different religious faiths.
ANALYSIS May 14, 2009
Catholic Opinion on Notre Dame Controversy Differs by Church Attendance
A recent survey by the Pew Forum found that about half of American Catholics have heard at least a little about the controversy over the University of Notre Dame's decision to invite President Barack Obama to speak at the university's May 17 commencement and receive an honorary degree.
ANALYSIS April 27, 2009
Interactive: Reasons for Joining, Reasons for Leaving
About half of American adults have changed religious affiliation at least once in their lives. This interactive explores the reasons different groups cite for leaving or joining their religion.
ANALYSIS April 23, 2009
Religion in South Africa 15 Years After the End of Apartheid
Data from a 10-country survey of Pentecostals conducted by the Pew Research Center's Forum on Religion & Public Life in 2006 provides estimates of the religious affiliation of South Africa's urban population.
ANALYSIS April 16, 2009
Religious Groups' Views on Global Warming
An analysis by the Pew Research Center's Forum on Religion & Public Life of a 2008 survey conducted by the Pew Research Center for the People & the Press examines views on global warming among major religious traditions in the U.S. 
ANALYSIS April 9, 2009
Christians' Views on the Return of Christ
Fully 79% of Christians in the U.S. say they believe that Christ will return to Earth someday. There is less agreement among Christians, however, over the timing and circumstances of his return.
ANALYSIS April 2, 2009
Not All Nonbelievers Call Themselves Atheists
According to the U.S. Religious Landscape Survey, conducted by the Pew Research Center's Forum on Religion & Public Life, 5% of American adults say they do not believe in God or a universal spirit, but only about a quarter (24%) of these nonbelievers actually call themselves atheists.
ANALYSIS March 19, 2009
Most Mainline Protestants Say Society Should Accept Homosexuality
The Pew Forum's U.S. Religious Landscape Survey finds that majorities of members two mainline Protestant denominations say that homosexuality is a way of life that should be accepted by society.
ANALYSIS March 4, 2009
Religious Groups Agree: Fixing the Nation's Economy Is Job One
While there is general agreement among religious groups that strengthening the economy should be a top policy priority for the government, people of different faiths are divided in their support for addressing other policy issues.
ANALYSIS February 26, 2009
The Stronger Sex -- Spiritually Speaking
An analysis of data from the U.S. Religious Landscape Survey, conducted by the Pew Research Center's Forum on Religion & Public Life, finds that women are more religious than men on a variety of measures.
ANALYSIS February 10, 2009
Religiously Mixed Couples: Cupid's Arrow Often Hits People of Different Faiths
More than one-in-four (27%) American adults who are married or living with a partner are in religiously mixed relationships. If people from different Protestant denominational families are included, nearly four-in-ten (37%) couples are religiously mixed.
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