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

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.

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.

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.

This poll, fielded October 4-8, 2007, is a part of continuing series of monthly polls that solicit public opinion on various political and social issues. This poll focused on Virginia and the state elections. Virginia residents were asked what was the biggest issue facing Virginia at that time, whether they thought the state of Virginia was moving in the right direction, and to rate the condition of Virginia's economy. Several questions asked whether respondents approved of the way the Virginia state legislature was handling its job, and for opinions of Governor Tim Kaine, Senator James Webb, Senator John Warner, the Republicans and Democrats in the state legislature, Junior Senator Mark Warner, Former Governor Jim Gilmore, and Congressman Tom Davis. Respondents were asked how closely they had been following the races for general assembly and state senate in Virginia, how likely they would be to vote in the Virginia state elections and for whom they would vote if the 2008 United States senate race were being held that day, which political party they would like to see in control of the state legislature, and which issues would be most important in their vote for the Virginia state legislature. A series of questions asked respondents about immigration, including how many recent immigrants lived in the respondents' area at the time, how much contact they had with recent immigrants, their opinions of immigrants and how they affect the country, whether illegal immigration was a problem in their area, and how federal, state, and local governments should handle illegal immigration issues. Information was also collected on how closely respondents were following the 2008 presidential race, how likely they were to vote in the 2008 presidential primaries in their state, for whom respondents would vote if the Democratic and Republican primaries and presidential election were being held that day, and for their opinions on the 2008 potential presidential candidates. Respondents were asked which political party they trusted more to handle issues such as taxes and the war in Iraq, which political party they preferred the next president to belong to, as well as whether they approved of the way George W. Bush was handling the presidency. Additional topics included the Iraq War, traffic congestion in their area of the state, Virginia's transportation funding plan, and Virginia's law on abusive driver fees. Demographic information includes sex, age, race, education level, household income, religious preference, frequency of religious attendance, whether respondents considered themselves to be a born-again Christian, whether anyone in the household was a military veteran, marital status, type of residential area (e.g., urban or rural), whether respondents were born in the United States, how many years they had lived in the state of Virginia, voter registration status and participation history, political party affiliation, political philosophy, and the presence of children under the age of 18 in the household.

In July 2024, the United States accepted 34 refugees from Ukraine. In fiscal year 2022 - which ended September 30, 2022 - the U.S. accepted a total of 1,610 Ukrainian refugees. The most Ukrainian refugees arrived in February 2022, the same month that Ukraine was invaded by Russia.In April 2022, the United States committed itself to welcoming 100,000 Ukrainian citizens and others fleeing Russian aggression in the region, but has so far only accepted 2,402 since the Russian invasion in February last year.