Numbers, Facts and Trends Shaping Your World

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  • feature

    Video: Estimating Europe’s unauthorized immigrant population

    A new Pew Research Center analysis estimates that at least 3.9 million unauthorized immigrants – and possibly as many as 4.8 million – lived in Europe in 2017. Learn how we conducted the first comprehensive estimate of Europe’s unauthorized immigrant population in over a decade.

  • report

    Appendix B: Unauthorized immigrant population trends with waiting asylum seekers, by country

    Editorial note to readers (March 19, 2025): This project estimated the number of unauthorized immigrants living in 32 European countries during the mid- to late-2010s. We used what were then the best available data sources from different governments and from the European Union. After our report was published in November 2019, researchers at the University […]

  • report

    Appendix C: Unauthorized immigrant population trends without waiting asylum seekers, by country

    Editorial note to readers (March 19, 2025): This project estimated the number of unauthorized immigrants living in 32 European countries during the mid- to late-2010s. We used what were then the best available data sources from different governments and from the European Union. After our report was published in November 2019, researchers at the University […]

  • report

    1. YouTube news consumers about as likely to use the site for opinions as for facts

    YouTube is one of the most popular online platforms in the United States. About seven-in-ten Americans (71%) say they use it, including roughly a quarter of all U.S. adults (26%) who get news there.[4.numoffset=”4″ This survey did not distinguish between the video sharing platform called YouTube and the more recently launched television streaming service called […]

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    2. Political values and Democratic candidate support

    Large shares of Democratic voters prefer an active role for government and believe in the importance of its regulatory role. About eight-in-ten Democratic and Democratic-leaning voters say the government should do more to solve problems, while just 20% say it’s doing too many things better left to businesses and individuals. Similarly, 78% say the government […]

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    Appendix D: References

    Ahlander, Johan and Mansoor Yosufzai. July 13, 2017. “Sweden intensifies crackdown on illegal immigrants.” Reuters. Albano, Alessandro, Veronica Corsini and Andrea Gereöffy. 2015. “Demographic statistics: A review of definitions and methods of collection in 44 European countries.” Annunziata, Marco. April 14, 2018. “Twenty years and nothing to show for it: Italy’s broken economic model.” Forbes. […]

  • short reads

    19 striking findings from 2019

    Every year, we publish hundreds of reports, blog posts, digital essays and other studies. Here are some of our most noteworthy findings from the past year.