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.
Numbers, Facts and Trends Shaping Your World
Read how Pew Research Center revised our estimates to reflect methodological advances, incorporate newly available data, and allow comparison across measures in this report.
The unauthorized immigrant population in the U.S. grew to 11 million in 2022, but remained below the peak of 12.2 million in 2007.
Many religious “nones,” which include atheists and agnostics, in 22 countries hold religious or spiritual beliefs, such as in an afterlife or something beyond the natural world.
The median wealth of immigrant households increased by 42% from December 2019 to December 2021.
Jews are more likely than other major religious groups to live outside their country of birth, yet they account for just 1% of all global migrants.
Only about a third of the world’s countries practice daylight saving time, and the vast majority of them are in Europe.
The number of international migrants grew to 281 million in 2020; 3.6% of the world’s people lived outside their country of birth that year.
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 […]
For each destination country, this Appendix tabulates the methods of deriving the religious composition of migrant stocks from various origin countries. We only estimate the religious composition of origin-destination country pairs that appear in the United Nations’ migrant stock database. For example, for Afghanistan, the UN only provides estimates of the number of migrants from […]
The number of unauthorized immigrants in the U.S. reached an all-time high after two consecutive years of record growth.
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