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    5 facts about religion in Nigeria

    As of 2020, Muslims made up a majority of Nigeria’s total population (56.1%), while Christians made up 43.4%.

  • report

    Methodology

    This section describes the methods used to estimate religious composition at the country level, regionally and globally; our procedures for measuring religious groups’ demographic characteristics and their religious “switching” rates; as well as methodological challenges that we considered in some countries. The final section lists the 201 countries and territories that make up each of […]

  • report

    Methodology

    Much of the data in this essay is drawn from the Religious Landscape Study (RLS). We also draw upon data collected from surveys conducted on Pew Research Center’s American Trends Panel (ATP) and data from the General Social Survey (GSS). We walk through the details of these data sources below. We also discuss how we […]

  • report

    Methodology A: Unauthorized immigrant estimates

    This report presents estimates of the number of unauthorized immigrants in the United States as of July 2023 and for previous years back to 1990. These estimates supersede all previously published Pew Research Center estimates. Although this report draws largely on U.S. Census Bureau surveys, our estimates generally will not agree exactly with data published by […]

  • report

    15. Why we revised our estimates for 2010

    Read how Pew Research Center revised our estimates to reflect methodological advances, incorporate newly available data, and allow comparison across measures in this report.

  • data essay

    Buddhism’s Recent Decline in East Asia

    Buddhism is the only major religion whose global population shrank between 2010 and 2020. Learn why it declined in East Asia, particularly in Japan and South Korea.

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