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    2. Projecting U.S. religious groups’ population shares by 2070

    The first half of this chapter provides details on the assumptions and results of each of the four main scenarios. These are not predictions for the future. Rather, projections show what would happen under a number of hypothetical scenarios. Some scenarios are intentionally implausible and meant only to illustrate the impact of different demographic forces. […]

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    2. Christian population change

    Christians remain the largest religious group. But they’re shrinking as a share of the global population, as many Christians are leaving religion altogether.

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    Religious Landscape Study

    Explore the 2023-24 Religious Landscape Study’s main report, interactive database, methodology, and more. Pew Research Center.

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    22. Religion’s role in public life

    Read more about Americans’ views about religious organizations and their effects on society, as well as the separation of church and state. Religious Landscape Study by Pew Research Center.

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    Executive summary

    Read key findings about trends in Americans’ religious beliefs and practices in the 2023-24 Religious Landscape Study’s executive summary. Pew Research Center.

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    Appendix A: Sources of religion data

    This report relies on religion data from several sources. Data on current patterns of religious switching come from Pew Research Center’s American Trends Panel (ATP). Adult religious composition data in the ATP is weighted to results from Pew Research Center’s National Public Opinion Reference Survey (NPORS). Data on patterns of religious transmission between parents and […]

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    Appendix C: Comparing the Center’s religion trends with those of other major surveys

    Pew Research Center has tracked trends in American religion since 2007 via the Religious Landscape Study (RLS) and since 2020 using the annual National Public Opinion Reference Survey (NPORS). But the RLS and NPORS are hardly the only sources of survey data on religion in the United States. Among others, the General Social Survey (GSS) […]