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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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POLL February 17, 2010
Religion Among the Millennials
By some key measures, Americans ages 18 to 29 are considerably less religious than older Americans. Yet in other ways, Millennials remain fairly traditional in their religious beliefs and practices.
ANALYSIS December 9, 2009
Many Americans Mix Multiple Faiths
The religious beliefs and practices of Americans do not fit neatly into conventional categories. A new poll by the Pew Forum finds that large numbers of Americans engage in multiple religious practices, mixing elements of diverse traditions.
ANALYSIS December 1, 2009
GOP Seen as Friendlier To Religion Than Democrats
The number of Americans describing the Democratic Party as friendly toward religion returned to levels similar to those seen in 2005 through 2007, according to a recent survey report. The Obama administration, however, is seen as friendly toward religion by more people (37%) than the Democratic Party as a whole (29%).
ANALYSIS November 18, 2009
Modest Rise in Concern About Islamic Extremism
The public continues to express concern about the rise of Islamic extremism in the United States and abroad, but a survey taken shortly after the deadly Nov. 5 shootings at the Fort Hood Army base shows only a modest increase in these concerns since 2007.
ANALYSIS October 28, 2009
The "Zeal of the Convert": Is It the Real Deal?
A recent Pew Forum analysis finds that people who have switched faiths (or joined a faith after being raised unaffiliated with a religion) are indeed slightly more religious than those who have remained in their childhood faith.
ANALYSIS September 9, 2009
Muslims Widely Seen As Facing Discrimination
Eight years after the terrorist attacks of 9/11, Americans see Muslims as facing more discrimination inside the U.S. than other major religious groups. Nearly six-in-ten adults (58%) say that Muslims are subject to a lot of discrimination, far more than say the same about Jews, evangelical Christians, atheists or Mormons.
POLL July 24, 2009
A Portrait of Mormons in the U.S.
This report, based on data from the U.S. Religious Landscape Survey, explores Mormons' unique place in the American religious landscape and is divided into three parts: demographic characteristics, religious beliefs and practices, and social and political views.
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.
POLL April 30, 2009
Obama, Catholics and the Notre Dame Commencement
Most Catholics who have heard about the issue support Notre Dame's decision to invite President Obama to speak at its May 17 commencement even though he supports abortion rights and embryonic stem cell research. But a poll finds a deep division on this issue between the most-observant Catholics and those who are less observant.
POLL April 27, 2009
Faith in Flux
Americans change religious affiliation early and often. In total, about half of American adults have changed religious affiliation at least once during their lives.
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.
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