Numbers, Facts and Trends Shaping Your World

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    Number of Muslims Worldwide Expected to Nearly Equal Number of Christians by 2050; Religiously Unaffiliated Will Make Up Declining Share of World’s Population

    Media Contact: Katherine Ritchey, Communications Manager 202-419-4372, kritchey@pewresearch.org Washington, April 2, 2015 — The religious profile of the world is rapidly changing, driven primarily by differences in fertility rates and the size of youth populations among the world’s major religions, as well as by people switching faiths. Over the next four decades, Christians will continue to […]

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    North America

    Christians are projected to remain the largest religious group in North America in the decades ahead, and their numbers are expected to increase from 267 million as of 2010 to 287 million in 2050.[1. numoffset=”66″ North America includes Bermuda, Canada, Greenland, the Saint Pierre and Miquelon Islands and the United States. (For the purposes of […]

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    Latin America and the Caribbean

    Christians are expected to remain the largest religious group in Latin America and the Caribbean in the decades ahead, growing by 25% from 531 million in 2010 to 666 million in 2050.[1. numoffset=”59″ The Latin America-Caribbean region includes 46 countries and territories. For estimates of the size of religious groups in specific countries in 2010 […]

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    Appendix A: Methodology

    This appendix details the methods used in this study to project changes in the population size and geographic distribution of eight major religious groups from 2010 to 2050. It is organized in five sections. The first section explains how the baseline (2010) religious composition estimates were derived. The second section describes how key input data […]

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    Chapter 2: Participation in Catholic Rites and Observances

    About four-in-ten U.S. Catholics say they attend Mass weekly. Few cultural Catholics (4%) say the same, but nearly half report attending Mass at least occasionally. Meanwhile, a strong majority of ex-Catholics (82%) say they never attend Mass at a Catholic church. A similar pattern is seen on some other measures of observance of Catholic rituals, […]

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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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    Catholics Divided Over Global Warming

    A solid majority of U.S. Catholics believe that Earth is warming. But climate change is a highly politicized issue that sharply divides American Catholics, like the U.S. public as a whole, mainly along political party lines.

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    Chapter 3: Family Matters

    Pope Francis’ upcoming visit to the United States will include his participation in the triennial World Meeting of Families in Philadelphia. This year’s meeting is expected to generate discussion on how the Catholic Church responds to new trends in marriage and family arrangements. Previous polling and analysis on the composition and structure of families has […]

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    Sub-Saharan Africa

    The total population in sub-Saharan Africa is expected to grow at a faster pace than in any other region in the decades ahead, more than doubling from 823 million in 2010 to 1.9 billion in 2050. As a result, the two dominant religions in the region – Christianity and Islam – both are expected to […]

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