Numbers, Facts and Trends Shaping Your World

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    Christians

    The world’s Christian population is expected to grow from 2.2 billion in 2010 to 2.9 billion in 2050.[1. numoffset=”39″ For more information on Christianity and different Christian traditions, see “Defining the Religious Groups.” See also the Pew Research Center’s December 2011 report “Global Christianity: A Report on the Size and Distribution of the World’s Christian […]

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    Chapter 1: Main Factors Driving Population Growth

    When demographers attempt to forecast changes in the size of a population, they typically focus on four main factors: fertility rates, mortality rates (life expectancy), the initial age profile of the population (whether it is relatively old or relatively young to begin with) and migration. In the case of religious groups, a fifth factor is […]

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    Adherents of Folk Religions

    An estimated 405 million people – or about 6% of the world’s population – were adherents of folk or traditional religions in 2010, and that number is expected to grow to 450 million by 2050. This increase will not keep pace with overall population growth, however, and the folk religion population is expected to drop […]

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    Appendix A: Methodology

    The centerpiece of Pew Research Center’s 2014 Religious Landscape Study is a nationally representative telephone survey conducted June 4-Sept. 30, 2014, among a sample of 35,071 U.S. adults. Approximately 60% of the interviews were conducted with respondents reached on cellphones (n=21,160) and 40% were completed on landlines (n=13,911). A minimum of 300 interviews were conducted […]

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    Multiracial in America

    Multiracial Americans are at the cutting edge of social and demographic change in the U.S.

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    Religiously Unaffiliated

    During the next few decades, the number of religiously unaffiliated people around the world is projected to grow modestly, rising from about 1.1 billion in 2010 to a peak of more than 1.2 billion in 2040 and then dropping back slightly.[1. numoffset=”42″ The religiously unaffiliated population, sometimes called the “nones,” includes those who self-identify as […]