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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 May 9, 2013
Frequently Asked Questions About "The World's Muslims: Religion, Politics and Society"
The Pew Research Center study on “The World’s Muslims” has generated a great deal of domestic and international attention. We have received many emails from readers and are grateful for the interest and feedback. Here are answers to some of the most common questions we have been receiving.
POLL April 30, 2013
The World's Muslims: Religion, Politics and Society
A new survey report looks at attitudes among Muslims in 39 countries on a wide range of topics, from science to sharia, polygamy to popular culture. The survey finds that overwhelming percentages of Muslims in many countries want Islamic law to be the official law of their land, but there is also widespread support for democracy and religious freedom. 
POLL April 3, 2013
U.S. Catholics Express Favorable View of Pope Francis
In the early days of Pope Francis' papacy, more than eight-in-ten U.S. Catholics (84%) say they have a favorable impression of the new pontiff, including 43% who express a very favorable view.
POLL March 18, 2013
U.S. Catholics Happy with Selection of Pope Francis
In a new Pew Research Center poll, nearly three-quarters of U.S. Catholics say they are happy with the selection of Pope Francis. But they are divided over how big a change he represents for the church.
POLL March 6, 2013
U.S. Catholics See Sex Abuse as the Church’s Most Important Problem, Charity as Its Most Important Contribution
U.S. Catholics see the scandal over sex abuse by clergy as the most important problem facing the church today and charitable efforts to aid the poor, feed the hungry and heal the sick as the church's most important contribution.
POLL February 21, 2013
U.S. Catholics Divided On Church’s Direction Under New Pope
As the pontificate of Benedict XVI winds down, three-quarters of American Catholics express a favorable view of the pontiff. Meanwhile, most U.S. Catholics say it would be good if the next pope allows priests to marry. And fully six-in-ten say it would be good if the next pope hails from a developing region like South America, Asia or Africa. 
POLL December 14, 2012
Americans Learned Little About the Mormon Faith, But Some Attitudes Have Softened
Eight-in-ten Americans say they learned little or nothing about the Mormon religion during the 2012 presidential campaign, according to a new Pew Research Center poll. At the same time, poll findings suggest some warming of attitudes toward Mormonism, especially among religious groups that voted heavily for Mitt Romney.
POLL October 9, 2012
“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. 
POLL August 9, 2012
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.
POLL August 1, 2012
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.
POLL July 19, 2012
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.