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    Religion and the 2012 Iowa Republican Caucuses

    Polling conducted as voters entered the 2012 Iowa caucuses shows a clear split between born-again evangelical Christians, who favored Rick Santorum, and other voters, who favored Mitt Romney.

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    Table: Christian Population as Percentages of Total Population by Country

    View as: Numbers | Percent of All Christians | Percent of Total Population Country Percentage of 2010 Population that is Catholic Percentage of 2010 Population that is Protestant Percentage of 2010 Population that is Orthodox Percentage of 2010 Population that is Other Christian Percentage of 2010 Population that is Christian Afghanistan < 0.1% < 0.1% […]

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    New Pew Forum Study Estimates Global Christian Population at 2.18 Billion

    Finds Stability in Percentage of Christians, But Large Shift in Where They Live  Washington,D.C. — WithChristmas fast approaching, the Pew Research Center’s Forum on Religion &Public Life published a newcomprehensive demographic report on the size and distribution of theworld’s Christian population. The study finds that there are 2.18 billionChristians of all ages in more than […]

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    Living as Majorities and Minorities

    Most Christians live in countries where Christians are in the majority, but nearly 208 million (10%) live in countries where they are a religious minority. If all these Christians were in a single country, it would have the second-largest Christian population in the world, after the United States. Of the 232 countries and territories included […]

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    Preface

    This report focuses on the size and geographic distribution of the world’s Christian population as of 2010. It is, in that sense, a snapshot in time. But because the true picture is not static, the Executive Summary also presents some comparisons with the world’s Christian population a century earlier. This is far enough back in […]

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    Reactions to the “Mormon Moment”

    Note: For the Center’s most current data on Latter-day Saints (sometimes called Mormons), read our 2026 report “Tradition and Change Among Latter-day Saints in the U.S.” Mitt Romney’s presidential campaign, the Broadway musical “The Book of Mormon” and other popular treatments of Mormonism in entertainment media have brought sustained attention to Mormons and their religion, but Mormons […]

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    Religious Beliefs and Practices

    Note: For the Center’s most current data on Latter-day Saints (sometimes called Mormons), read our 2026 report “Tradition and Change Among Latter-day Saints in the U.S.” A large majority of Mormons say religion is very important in their lives, more than four-in-five pray at least once a day and three-quarters attend religious services weekly or more. Almost […]

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    Appendix A: Survey Methodology

    This survey of prison chaplains was conducted from Sept. 21 through Dec. 23, 2011, among professional prison chaplains or religious services coordinators (the two titles are used interchangeably for the purposes of this report) working in prisons in all 50 states.20 Correctional authorities in each of the 50 states granted permission for the Pew Research […]

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    Chaplains’ Views on the Correctional System

    Prison chaplains are, on balance, positive about the correctional system. A majority says the system where they are employed “works pretty well,” and strong majorities rate the correctional system as excellent or good when it comes to maintaining order and meeting the religious needs of inmates. Evaluations of rehabilitation and re-entry efforts are less positive, […]