Jeffrey S. Passel

The share of 18- to 29-year-olds living with their parents has become a majority since U.S. coronavirus cases began spreading early this year.

If unauthorized U.S. immigrants aren't counted, 3 states could each lose a seat they otherwise would have had and 3 others each could gain one.

About three-quarters of U.S. adults say undocumented immigrants mostly fill jobs U.S. citizens do not want.

90% of the decrease in employment between February and March arose from positions that could not be teleworked.

Roughly 317,000 immigrants from 10 countries have this status after fleeing dangerous conditions at home. Learn about where these protections stand.

The number of unauthorized immigrants living in Europe increased between 2014 and 2016, then leveled off to an estimated 3.9 million to 4.8 million in 2017, according to new estimates from Pew Research Center.

The size of Europe’s unauthorized immigrant population in 2017 was less than half the number in the United States.

Most live in Germany, the UK, Italy and France, and about half had arrived in Europe in recent years. Overall, these migrants account for less than 1% of Europe’s total population.

Jeffrey S. Passel, senior demographer, on the research techniques used to derive the unauthorized immigrant population estimate in the U.S. and the challenges involved.

There were 10.5 million unauthorized immigrants in the U.S. in 2017. The number of Mexican unauthorized immigrants declined since 2007.