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.
Pew Research Center conducts polls in many countries other than the United States. But the methodology behind our international surveys can vary from country to country, and what works in one place might not work in another.
Worldwide, an estimated $625 billion (USD) was sent by migrants to individuals in their home countries in 2017, a 7% increase from 2016, when the amount was $586 billion, according to economists at the World Bank. This increase follows two consecutive years of decline.
Facebook and WhatsApp are the most widely used social media platforms and messaging applications in 11 countries around the world.
More countries see climate change as a top international threat, but many people also name ISIS and cyberattacks as their top security concern.
Explore detailed tables on the number and share of immigrants and emigrants by country.
This sortable table provides data for levels of internet use, cellphone ownership, smartphone ownership and social media usage from 2013 to 2017 by country, highlighting the countries surveyed in sub-Saharan Africa.
Compare different countries' opinions of the United States and its president since 2002.
Monthly number of migrant detections by sea (January 2009 to August 2018), by route