In 2022, an estimated 10.99 million unauthorized immigrants were living in the United States. This is an increase from about 3.5 million unauthorized immigrants who lived in the United States in 1990.

In January 2022, it was estimated that about 1.85 million male illegal immigrants living in the United States were aged between 35 and 44 years old. In that same year, it was estimated that 1.52 million female illegal immigrants living in the U.S. were between 35 and 44 years old.

In 2019, California had the highest population of unauthorized immigrants, at around 2.74 million. The overall figure for the United States was estimated to be around 11.05 million unauthorized immigrants.

As of January 2022, it was estimated that about 4.81 million illegal immigrants from Mexico were living in the United States. It was also estimated that 750,000 illegal immigrants from Guatemala were living in the United States.

The estimated population of unauthorized immigrants in the U.S. stands at around 11 million people. Although the number has stabilized, the United States has seen a spike in migrant encounters in the last few years, with over two million cases registered by the U.S. Border Patrol in 2023. This is a slight decrease from the previous year, when there were over 2.2 million cases registered. Due to its proximity and shared border, Mexico remains the leading country of origin for most undocumented immigrants in the U.S., with California and Texas being home to the majority.

Immigration and political division

Despite the majority of the population having immigrant roots, the topic of immigration in the U.S. remains one of the country’s longest-standing political debates. Support among Republicans for restrictive immigration has grown alongside Democratic support for open immigration. This growing divide has deepened the polarization between the two major political parties, stifling constructive dialogue and impeding meaningful reform efforts and as a result, has led to dissatisfaction from all sides. In addition to general immigration policy, feelings toward illegal immigration in the U.S. also vary widely. For some, it's seen as a significant threat to national security, cultural identity, and economic stability. This perspective often aligns with support for stringent measures like Trump's proposed border wall and increased enforcement efforts. On the other hand, there are those who are more sympathetic toward undocumented immigrants, as demonstrated by support for the Deferred Action for Childhood Arrivals (DACA) program.

This statistic shows the estimated percentage of employed undocumented immigrants in the United States in 2016, distinguished by industry. In 2017, around 14.2 percent of agriculture workers were estimated to be undocumented immigrants.

In 2022, the greatest number of illegal aliens returned in the United States were from the Philippines, with 39,891 illegal aliens returned. India, Canada, China, and Russia rounded out the top five in that year.

The statistic shows the number of illegal immigrants living in the U.S. from 2000 to 2012, as estimated by the Department of Homeland Security. As of 2012, about 11.4 million illegal immigrants were living in the United States.

In 2022, about 2.58 million illegal aliens were apprehended in the United States. This was a significant increase from the previous year, when there were around 1.87 million illegal aliens apprehended nationwide. Apprehensions refer to Border Patrol apprehensions and ICE administrative arrests.

In 2022, the greatest number of illegal aliens apprehended in the United States were from Mexico, with 836,844 illegal aliens apprehended. Guatemala, Cuba, Honduras, and Venezuela rounded out the top five in that year.

This statistic shows the top ten metropolitan areas in the United States with highest unauthorized immigrant populations in 2014. With over one million unauthorized people, New York-Newark-Jersey City, NY-NJ-PA had the highest illegal immigrant population in the United States in 2014.

This statistic shows the estimated GDP loss if all illegal immigrant workers were removed from the United States. As of September 2016, the manufacturing industry would suffer an estimated 74 billion U.S. dollar decline in GDP output if all illegal immigrant workers were removed from the U.S.

According to a survey conducted early in 2025, the vast majority of Americans agreed that all immigrants living in the U.S. illegally who have been convicted of a violent crime should be deported. Only six percent opposed. However, only 37 percent of respondents were in favor of deporting all immigrants in the U.S. illegally who have not been convicted of a crime.

In 2024, when asked how undocumented immigrants to the United States should be handled, 39 percent of American survey respondents said that there should be a way for them to become legal U.S. residents and apply for citizenship. In 2022, it was estimated that there were about eleven million undocumented immigrants in the United States.

As of 2023, 27.3 percent of California's population were born in a country other than the United States. New Jersey, New York, Florida, and Nevada rounded out the top five states with the largest population of foreign born residents in that year. For the country as a whole, 14.3 percent of residents were foreign born.

This statistic shows the estimated tax paid by illegal immigrants in the United States in 2014. Illegal immigrants in the U.S. paid an estimated 3.6 billion U.S. dollars in property tax in that year.

According to a survey conducted in 2024, 41 percent of Americans believed that housing shortages are being caused by illegal immigrants in the United States. In comparison, 48 percent of white Americans, 35 percent of Hispanic Americans, and 21 percent of Black Americans shared this belief.

This statistic shows the estimated number of illegal immigrants in the United States labor force from 2000 to 2014. In 2014, an estimated 8 million illegal immigrants participated in the U.S. labor force.

This statistic illustrates the number of undocumented migrant arrivals in the United States in 2016, by method of arrival. In that year, 320,000 migrants entered the U.S. by overstaying their visa.

This graph shows the support of Americans on the immigration law that had passed Senate in June 2013. As of July 2013, about 46 percent of Americans supported the immigration law that included a path to citizenship for undocumented immigrants now living in the United States and stricter border control.