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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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ANALYSIS March 8, 2012
Faith on the Move
This study focuses on the religious affiliation of international migrants, examining patterns of migration among seven major groups: Christians, Muslims, Hindus, Buddhists, Jews, adherents of other religions and the religiously unaffiliated.
ANALYSIS February 23, 2012
Religion in the News: Islam and Politics Dominate Religion Coverage in 2011
The biggest religion stories of 2011 involved tensions over Islam and questions about faith in presidential politics, especially Mormonism, according to an annual review of religion in the news.
ANALYSIS December 19, 2011
Global Christianity
A comprehensive demographic study finds that there are 2.18 billion Christians of all ages around the world, representing nearly a third of the estimated 2010 global population of 6.9 billion. Christians are also geographically widespread, and no single region can indisputably claim to be the center of global Christianity.
EVENT TRANSCRIPT December 19, 2011
Global Christianity: Event Transcript
In a conference call with journalists, Pew Forum staff members discussed the findings of a new report, Global Christianity: A Report on the Size and Distribution of the World’s Christian Population.
ANALYSIS January 27, 2011
The Future of the Global Muslim Population
A new Pew Forum report on the size, distribution and growth of the global Muslim population finds that the world’s Muslim population is expected to increase by about 35% in the next 20 years, but it is expected to grow at a slower pace in the next two decades than it did in the previous two decades.
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).
ANALYSIS December 17, 2009
Little Support for Terrorism Among Muslim Americans
Recent events such as the Fort Hood shootings and the arrest of five Muslim American students in Pakistan have raised questions about the threat of homegrown terrorism in the U.S.  
EVENT TRANSCRIPT December 17, 2009
Global Restrictions on Religion
More than half a century ago, the United Nations affirmed the principle of religious freedom in the 1948 Universal Declaration of Human Rights, defining it as "the right to freedom of thought, conscience and religion."
EVENT TRANSCRIPT November 13, 2009
The Future of Evangelicals: A Conversation with Pastor Rick Warren
The evangelical Christian movement historically has been defined by its members' distinctive doctrinal standards and practices. Yet in recent years many Americans have come to understand evangelicals more by their political, rather than religious, identity. 
ANALYSIS October 7, 2009
Mapping the Global Muslim Population
A comprehensive demographic study of more than 200 countries finds that there are 1.57 billion Muslims of all ages living in the world today, representing 23% of an estimated 2009 world population of 6.8 billion.
INTERVIEW October 16, 2008
Ten Years of Promoting Religious Freedom Through U.S. Foreign Policy
Oct. 27 marks the 10th anniversary of the signing of the International Religious Freedom Act, a law that made the promotion of religious freedom a basic aim of U.S. foreign policy.
ANALYSIS June 19, 2008
Global Anglicanism at a Crossroads
When leaders of the worldwide Anglican Communion gather in Canterbury, England, in mid-July for their decennial Lambeth Conference, they will deliberate over the future of a church that is experiencing deep, and perhaps irreconcilable, internal conflicts.
ANALYSIS May 1, 2008
Religion in China on the Eve of the 2008 Beijing Olympics
According to a 2006 survey by the Pew Global Attitudes Project, 31% of the Chinese public considers religion to be very or somewhat important in their lives, compared with only 11% who say religion is not at all important.
ANALYSIS December 12, 2007
Presidential Election in South Korea Highlights Influence of Christian Community
The upcoming presidential election in South Korea on Dec. 19 is drawing attention to the growing presence of Christianity in a country that as recently as 1960 had fewer than a million Christians.
ANALYSIS October 30, 2007
Widespread Negativity: Muslims Distrust Westerners More than Vice Versa
In 2006, the Pew Global Attitudes Project set out to explore religious tensions, examining how non-Muslims in the West and elsewhere view Muslims, as well as how Muslims think about people in western nations.
POLL May 22, 2007
Muslim Americans: Middle Class and Mostly Mainstream
The Pew Research Center conducted more than 55,000 interviews to obtain a national sample of 1,050 Muslims living in the United States.
EVENT TRANSCRIPT May 14, 2007
Global Schism: Is the Anglican Communion Rift the First Stage in a Wider Christian Split?
Philip Jenkins, a Penn State University professor and one of the first scholars to call attention to the rising demographic power of Christians in the southern hemisphere, analyzed the ongoing schism in the worldwide Anglican church.
EVENT TRANSCRIPT December 4, 2006
Religion in a Globalizing World
Some of the nation's leading journalists and distinguished scholars gathered in Key West, Fla., in December 2006 for the Pew Forum's biannual Faith Angle Conference on religion, politics and public life. Peter Berger, professor emeritus of religio...
EVENT TRANSCRIPT October 5, 2006
Spirit and Power Press Conference
The Pew Forum held a telephone news conference with reporters across the country to discuss key findings from a new international poll, Spirit and Power: A 10-Country Survey of Pentecostals.
POLL October 5, 2006
Spirit and Power
Pentecostalism and related charismatic movements represent one of the fastest-growing segments of global Christianity. Even more than other Christians, Pentecostals and other renewalists believe that God, acting through the Holy Spirit, continues to play a direct, active role in everyday life.
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