The U.S. is a nation of immigrants. But unauthorized immigrants have become a source of political debate over issues such as deportations, legal status, education and benefits. For years, the Pew Research Center has estimated the size of the unauthorized immigrant population and surveyed the U.S. public about immigration.

U.S. PoliticsJanuary 16, 2019

How Americans see illegal immigration, the border wall and political compromise

As Trump and Democrats press their cases about ways to end the government shutdown, here’s a look at how Americans see illegal immigration.

HispanicDecember 3, 2018

What we know about illegal immigration from Mexico

There were 12.0 million immigrants from Mexico living in the United States in 2016, and fewer than half of them were in the country illegally.

HispanicNovember 28, 2018

5 facts about illegal immigration in the U.S.

The number of unauthorized immigrants living in the United States was lower in 2016 than at any time since 2004.

HispanicNovember 27, 2018

U.S. Unauthorized Immigrant Total Dips to Lowest Level in a Decade

There were 10.7 million unauthorized immigrants in the U.S. in 2016, down from 12.2 million in 2007. The total is the lowest since 2004 and is tied to a decline in the number of Mexican unauthorized immigrants.

HispanicNovember 27, 2018

Unauthorized immigrant population trends for states, birth countries and regions

In 2016, an estimated 10.7 million unauthorized immigrants lived in the U.S., down from a peak of 12.2 million in 2007. Explore trends in the U.S. unauthorized immigrant population by state of residence in the U.S., as well as by birth countries and regions.

GlobalNovember 1, 2018

Number of U.S.-born babies with unauthorized immigrant parents has fallen since 2007

About 250,000 babies were born to unauthorized immigrant parents in the United States in 2016, the latest year for which information is available, according to a new Pew Research Center analysis of government data about illegal immigration. This represents a 36% decrease from a peak of about 390,000 in 2007.

HispanicOctober 16, 2018

Email Mini-course on U.S. Immigration

Want to know more about immigration to the U.S.? Sign up now for our short email mini-course to take your understanding to the next level.

HispanicFebruary 26, 2018

Key facts about U.S. immigration policies and proposed changes

Proposals to change the U.S. immigration system have received renewed attention under the Trump administration. Read key details about U.S. immigration programs.

Pew Research CenterFebruary 15, 2018

Most immigrants arrested by ICE have prior criminal convictions, a big change from 2009

Immigrants with past criminal convictions accounted for 74% of all arrests made by ICE agents in fiscal 2017.

Pew Research CenterFebruary 8, 2018

ICE arrests went up in 2017, with biggest increases in Florida, northern Texas, Oklahoma

After years of decline, the number of arrests made by U.S. Immigration and Customs Enforcement climbed to a three-year high in fiscal 2017.