The United States is home to tens of millions of people born elsewhere. Distinguishing legal from illegal status is the starting point for any serious discussion of the country’s makeup and its future.
Legal Immigrants: Naturalized Citizens and Green Card Holders
As of the most recent comprehensive figures, roughly 25.8 million foreign-born people are naturalized U.S. citizens. These are individuals who arrived legally, met the requirements, and took the oath of citizenship.
Lawful permanent residents—green card holders—number approximately 13 million as of January 1, 2025, according to Department of Homeland Security estimates. Of those, about 8.5 million are eligible to naturalize based on residency requirements.
Combined, naturalized citizens and green card holders total in the range of 38 to 39 million foreign-born people with permanent legal status. This group is the core of legal immigration. Annual green card issuances remain high—over 1.3 million in fiscal year 2025—with Mexico, Cuba, China, India, and the Dominican Republic among the leading source countries. Family-based categories dominate the flow.
Illegal Aliens: The Unauthorized Population
Estimates of the illegal population vary by methodology, but recent data converge on a significantly larger stock than a decade ago. The Migration Policy Institute places the unauthorized population at 15.8 million as of mid-2024. Pew Research Center estimated 14 million in 2023 after rapid growth from 10.5 million in 2021, with preliminary indications of continued elevation into 2024 followed by possible decline under stricter enforcement in 2025.
Other researchers, including FAIR and the Center for Immigration Studies, have produced higher peak figures during the recent surge. The common thread is clear: after years of relative stability around 11 million, the illegal population expanded sharply between 2021 and 2024.
Charlie Kirk was right, and now JD Vance e is saying it
Young people are turning to socialism because our country has been sold out to foreigners and now the middle class has been wiped out and can’t afford to live
JD Vance says it can be fixed
“A lot of Americans look at this… pic.twitter.com/Pw6CCaA2bY
— Wall Street Apes (@WallStreetApes) August 7, 2026
Where They Come From
Mexico remains the single largest source of unauthorized immigrants, at roughly 5.5 million or about 35 percent of the total in the latest MPI data. That share is down sharply from over 60 percent a decade and a half earlier.
Central America has driven much of the recent growth. Guatemala, Honduras, and El Salvador together account for millions. South America has surged as well—Venezuela, Colombia, Ecuador, Nicaragua, and Brazil stand out. Smaller but notable numbers come from the Caribbean, Asia (including the Philippines), Africa, and elsewhere. The population is more diverse than in previous decades.
What This Means for the Future
Legal immigration continues at high volume and is broadly accepted as part of America’s tradition when it is orderly and selective. The illegal population is different. Fifteen million or more people living outside the law create persistent pressure on wages in lower-skilled sectors, on housing and public services in high-impact areas, and on the rule of law itself. Large shares of long-term unauthorized residents have U.S.-citizen children, complicating enforcement.
Politically, the numbers matter. Naturalized citizens already vote. Green card holders can naturalize and eventually vote. Any future amnesty or expanded legalization path would rapidly expand the electorate in ways that favor one party over another. The diversification of origins also changes assimilation patterns, language demands, and cultural cohesion in ways previous Mexican-dominated waves did not.
Under current enforcement priorities the illegal stock may stabilize or decline. Without sustained border control, interior enforcement, and limits on legal admissions that incentivize chain migration, the trajectory remains one of continued growth in the foreign-born share of the population. America has absorbed large immigrant waves before. The difference today is the scale of the illegal component and the political refusal, for years, to treat it as a solvable problem rather than a permanent fact.
Help American Liberty PAC in our mission to elect conservatives and save our nation. Support – American Liberty PAC