Numbers, Facts and Trends Shaping Your World

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    2. Changes in income status vary across demographic groups

    The shrinkage of the middle-income tier among American adults, and the growth of the upper- and lower-income tiers, has played out differently among demographic groups. This section identifies upwardly and downwardly mobile groups (winners and losers) by comparing changes in their income status over two time periods. From 1971 to 2015, adults overall experienced more […]

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    Health Care, Education Are Top Priorities in Sub-Saharan Africa

    As the United Nations prepares to ratify new global development goals, a new Pew Research Center survey finds that people in major sub-Saharan African nations are feeling more optimistic about the future than many others around the world. Having experienced relatively high rates of economic growth in recent years, African publics are more likely than […]

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    1. Demographic and Financial Profiles of People in the U.S., Germany and Italy

    The graying of the population is one of the most significant demographic shifts occurring in the U.S. today. Some 13% of Americans are now ages 65 and older, and that share is projected to rise to 21% by the middle of this century. Population aging has been even more rapid in other developed countries, such […]

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    5 facts about Social Security

    Social Security has developed into one of the most popular federal programs, though that popularity is tempered by concern over its long-term financial outlook.

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    Appendix B: Methodology

    This appendix describes the specific items used from these various sources and the development of some of the migration measures used in the report. Data from the Mexican Survey of Demographic Dynamics (ENADID), the American Community Survey, the U.S. censuses of 1990 and 2000, and the Current Population Survey are based on Pew Research Center […]

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    About the Report

    Updated August 13, 2015: This new edition includes corrected estimates for Iceland, Luxembourg, the Netherlands and Taiwan, and some related aggregated data. This report examines changes in the distribution of the global population by income from 2001 to 2011. Of special interest is the change in the global middle-income population, or the global middle class. […]

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    References

    Anderson, Monica. 2015. “A Rising Share of the U.S. Black Population Is Foreign Born; 9 Percent Are Immigrants; and While Most Are from the Caribbean, Africans Drive Recent Growth.” Washington, D.C.: Pew Research Center, April. Barro, Robert and Jong-Wha Lee. 2013. “A New Data Set of Educational Attainment in the World, 1950-2010.” Journal of Development Economics 104 […]

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    Chapter 4: Social and Political Attitudes

    Overall, more Americans now identify as politically liberal than did so when the Religious Landscape Study was first conducted, while fewer U.S. adults identify themselves as political moderates. Religious “nones” are more likely than those in many Christian traditions to describe themselves as politically liberal; indeed, 39% of religious “nones” now describe themselves as liberals. […]

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    In greater Dallas area, segregation by income and race

    Income segregation has increased over the past 30 years in 27 of the 30 largest U.S. metro areas. There were clear divisions between low-income and middle- and upper-income areas, as well as along racial lines.

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