15.8%
Foreign-born share of the U.S. population
The share was 7.9% in 1990.
The charts and maps below show the scale and impacts of mass immigration in the United States.
15.8%
The share was 7.9% in 1990.
+33.5M
There were 19.8M foreign-born residents in 1990. By 2025, that figure was 53.3M.
5.0×
2024 national ratio, up from 4.1× in 1990 and 2.7× in 1970 (+86% since 1970).
+70%
$873 became $1,487 in 2024 dollars. The increase since 1990 was 39%.
+26.4%
$65,440 became $82,690 in constant dollars. Housing costs rose faster.
6.1×
ACS 2024 average, compared with 3.2× in metros under 5% foreign-born.
A pattern
The foreign-born share of the U.S. population has fluctuated dramatically over time. After a period of high immigration to urban areas at the start of the 20th century, the 1924 Immigration Act cut admissions by 80%. This led to a significant reduction in the foreign-born population, which started changing after the 1965 Hart-Celler Act and accelerating after the 1990 Act.
Foreign-born share of the U.S. population, 1850-2025
Before 1890, most immigrants were settlers, spreading out across the country. The 1890-1924 urban wave brought in 20 million Italian, Eastern European, and Jewish immigrants to large metro areas. The landmark 1924 Immigration Act cut admissions by ~80%, leading to a 40-year period of relatively low immigration. By 1970, the foreign-born population fell to a low of 4.7%. The 1965 Hart-Celler Act reopened the door and increased immigration, before the 1990 Act significantly accelerated it. The foreign-born population has climbed back to 15.8% as of January 2025.
We've had the same immigration policy in the United States since 1991, when legal inflows were increased to over 1 milltion per year and the H1-B program was established.
Permanent-resident status granted that year; roughly half are adjustments for people already in the United States.
How many people are living here illegally. Nobody publishes how many entered in a given year, so this is the measure that counts people.
Pew Research Center, residual estimates, one consistent basis.
Everyone born outside the United States who lives here, whatever their status. A stock, so it carries the accumulated effect of every year of arrivals.
Foreign-born residents added since the 1990 Immigration Act
Over the same period the median American home went from costing 3.0 years of median household income to 5.6. A middle-class family that could buy on one income in 1990 now needs nearly twice as many years of earnings for the same house.
The scale
The U.S. has 53.3 million foreign-born residents as of January 2025, and the immigration stock sits at about 93 million in 2024, roughly 28% of the country. About 64% of all foreign-born now live in just 20 metro areas. These areas have grown at a far faster rate - and become significantly more expensive - than the rest of the country.
Metro area population growth since 1990
Housing
A median home ran about four years of household income through the 1990s. It costs five now, and across 109 of the 111 metros over 500,000 people the ratio rises with a metro's immigrant share.
Cost of a U.S. home, relative to income
Nationally a median home ran about 4x median household income through the 1990s and about 5x today. The comparison below uses the median metro in each foreign-born-share band, across 109 metro areas with more than 500,000 residents.
By year, nationally
Median sale price divided by median household income. It held near 4x through the 1990s, then stepped up after 2000 and has not come back down.
Sorted into seven foreign-born-share bands
Each color marks a band from lower to higher foreign-born share. The bars show median home value relative to median household income; the table adds median annual rent relative to that income.
Median home value / median household income
| Band | Metros | Home / income | Rent / income |
|---|---|---|---|
| Under 5% | 4 | 3.11x | 18.8% |
| 5 to 7% | 17 | 3.81x | 19.7% |
| 7 to 10% | 27 | 3.82x | 19.1% |
| 10 to 15% | 25 | 4.30x | 21.3% |
| 15 to 20% | 11 | 4.82x | 21.4% |
| 20 to 25% | 17 | 5.64x | 24.2% |
| 25%+ | 8 | 6.42x | 22.0% |
109 of the 111 U.S. metro areas over 500,000 people.
Jobs and wages
0%. 9%: local prices take two thirds of the difference. Across the same 109 metros, moving that way lifts median household income about 23% and lifts the median home price about 97%. Pay is broadly similar across the country. Housing is not, and that gap is where a wage goes. The occupational split below shows where the added workers landed, which is the jobs that never required a degree.
Foreign-born share of each occupation group, 2025
Foreign-born workers are 19.2% of everyone employed. In construction, maintenance and farm work they are 28.5%. In service jobs, 24.4%. On factory floors, in warehouses and behind the wheel, 23.9%. In management and professional work they are 16.2%, below their share of the workforce as a whole. These are the only five groups the Labor Department publishes by nativity, and each one is listed with the jobs it actually contains.
The H-1B pipeline
When the H-1B Visa was introduced in 1990, it was positioned as a narrow way to fill specialty occupations no American could fill. It replaced the existing H-1 Visa, which was a 'best of the best' test requiring distinguished merit and ability, read by the immigration courts as preeminence in the field, and which carried no numerical cap at all. H-1B in practice only requires a bachelor's degree and is a way to bring in millions of Indian immigrants to compete with Americans for IT and engineering jobs.
The cap against the reality
The cap counts only new cap-subject petitions. Renewals and cap-exempt employers are not counted against it, so the number of people in the country was never governed by the number Congress set.
Petitions approved each year
Every year since 1999 has run above the cap. Approvals count a worker again each time the petition is renewed.
The cap was never the constraint. What the number of visas cannot show is who receives them and what they are paid, and those are the two facts that decide whether the program is filling a gap or lowering a wage.
H-1B approvals, origin and pay, 2025
The 1990 Act replaced the H-1 visa, which required "distinguished merit and ability", with the H-1B, which requires a bachelor's degree. USCIS approved 406,348 petitions under it in 2025. Three questions decide whether it is bringing in talent the country cannot find: who gets the visas, what they are paid, and whether they are new workers at all.
1. Who gets them. Country of birth, 2025
2. What they are paid. Wage level of new H-1B jobs, five-year average 2020-2024
3. Whether they are new workers. 406,348 approvals against an 85,000 cap, 2025
Assimilation
Assimilation is directly related to how many immigrants are coming in. When fewer entries are allowed, assimilation is more likely, as immigrants have to adapt to the broader society around them. If you move to an area with hundreds of thousands of people who speak your language and share your customs, you are unlikely to adapt to the American way of life. Language is the most direct measure of that, and it is the one the country stopped collecting for forty years. The modern question dates only to 1980, so there is no comparable reading from the restriction era to measure today against. What can be measured is the present: about 47% of immigrant adults speak English less than very well, and the naturalization test asks for a vocabulary far smaller than the ones other countries require.
English ability among immigrant adults, 2023
47% of immigrant adults, about 22.3 million people, speak English less than very well. They account for 81% of everyone in the country with limited English. The barrier follows them into the doctor's office, the job market, and the checkout line.
How well immigrant adults speak English
47% have limited English, about 22.3 million adults
81% of every adult in the United States who speaks English less than very well is an immigrant.
Approximate vocabulary required for citizenship, mapped to CEFR levels
The U.S. requires 78 words for its citizenship test, while Denmark requires ~5,000.
A typical B1 test, which most of Europe requires as a minimum, demands 30-40x more vocabulary than the U.S. naturalization test.
Current Changes
The Trump Administration has been making progress through executive measures, namely:
U.S. net international migration
Net migration averaged about 920,000 a year in the 2010s, peaked at 3.3 million in 2023, and fell to 1.3 million in 2025. For 2026 the CBO projects about 570,000 and the Census Bureau about 321,000. The first two bars are decade averages; the rest are single years. Hover any bar for detail.
Every figure on this page is drawn from Census, BLS, and other government data, and each article works through one part of it in detail.