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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   
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.
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.
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.
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.
Resources on Islam and Christianity in Sub-Saharan Africa
Tolerance and Tension: Islam and Christianity in Sub-Saharan Africa, a 19-country survey by the Pew Research Center's Forum on Religion & Public Life, reveals that the vast majority of people in many sub-Saharan African nations are deeply committed to Christianity or Islam, and yet many continue to practice elements of traditional African religions.
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.
Tolerance and Tension: Islam and Christianity in Sub-Saharan Africa
A new 19-country survey by the Pew Forum reveals that the vast majority of people in many sub-Saharan African nations are deeply committed to Christianity or Islam, and yet many continue to practice elements of traditional African religions.
Tolerance and Tension: Islam and Christianity in Sub-Saharan Africa
The Pew Research Center's Forum on Religion & Public Life held a conference call with journalists to discuss the findings of a new 19-country survey, "Tolerance and Tension: Islam and Christianity in Sub-Saharan Africa."
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.  
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."
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. 
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.
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.
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.
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.
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.
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.
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.
Nigeria's Presidential Election: The Christian-Muslim Divide
by Robert Ruby and Timothy Samuel Shah, Pew Forum on Religion & Public Life March 21, 2007 A Muslim man walks past a church gate in Lagos, Nigeria. (AP Images) If Nigeria's presidential election takes place as scheduled on April 21, it will ma...
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...
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