US immigrants shifted from primarily originating in Ireland and Germany to Mexico and India.

The share of the immigrant population in the US peaked at nearly 16% in January 2025

In January 2025, the US reached a historic high of 53.3 million immigrants—nearly 16% of the population. By June of that year, the number had fallen by more than a million, ending 50 years of continuous growth in the immigrant population.

Track the changes in US immigration law throughout history

This interactive timeline tracks the development of US immigration law, overlaid with time-series data on percentages of the foreign-born population. Explore how each major policy development correlated with immigration levels, revealing the relationship between legislation and demographic change.

A timeline of US immigration laws

The United States began regulating immigration soon after it won independence from Great Britain, and the laws since enacted have reflected the politics and migrant flows of the times. Here's a timeline of key immigration laws from 1790 to 2014, according to the Pew Research Center.

Before 1965, US immigration law relied on nationality-based bans and quotas.

Immigrants generated about $1.7T in economic activity in 2023 and paid roughly $652B in taxes.

The 1965 Immigration and Nationality Act abolished national-origin quotas and transformed the demographics of America

Following decades of citizens pressing for reform, President Johnson signed legislation abolishing national-origin quotas, enabling increased immigration from Asia and Africa. The LBJ Presidential Library features photos, videos, audio clips, and text from the 1965 signing ceremony.

The 1924 Immigration Act established national-origin quotas favoring certain regions

The Johnson-Reed Act established stringent national-origin quotas favoring northern and Western Europeans while restricting immigration from other regions. This article chronicles the act's origins, its implications, and subsequent efforts to overturn these restrictions.

Explore the different experiences of immigrant communities arriving in the US

Immigrant communities experienced varied paths to entry and assimilation in America, depending on their arrival time and context. This Library of Congress resource provides detailed accounts of the experiences of major immigrant groups, drawing on primary sources.

Tracking where people moved in the US in 2022

The latest data from the US Postal Service's change of address request system shows a decline in migration in 2022. See where people are moving and where they are leaving with this data breakdown.

40% of Americans have ancestors who immigrated via Ellis Island

For over 60 years, Ellis Island was the gateway to America, processing millions of immigrants seeking a new life. While many passed through with ease, others faced rigorous medical exams, legal scrutiny, and even deportation. Learn how this small island shaped generations of American families.

Multiple legal pathways exist for immigrating to the United States

This comprehensive guide outlines various routes to US immigration, including family-sponsored and employment-based visas, as well as humanitarian protections. Navigate the complex American immigration system and understand the options available to prospective immigrants seeking legal entry.

Studies show immigrants commit crimes at lower rates than native-born Americans

Research examining incarceration records and crime data generally finds that immigrants—including undocumented individuals—have lower crime and incarceration rates than US-born citizens, though measurement is limited by gaps in national data on immigration status.

America's demographic change in one chart

From 1901 to 2020, the US population has changed significantly. This video reveals the change in America’s demographics over more than 100 years.

Irish music became popular in the US during the 19th century

The influx of Irish immigrants in the mid-1800s, driven by starvation and abysmal employment opportunities, led to a significant Irish-American culture, especially in urban hubs such as New York, Boston, Philadelphia, Chicago, and San Francisco.

In June 2025, apprehensions of illegal border crossings at the US-Mexico border reached an all-time low

Total US-Mexico border encounters fell to just 25,228—the lowest monthly figure ever recorded by Customs and Border Patrol—with only 8,024 Border Patrol apprehensions and a single-day low of 136 detentions on June 28.

See how income levels have changed in each state since 2010

Since 2010, the median household income has increased by 22% on average. Montana, the state with the largest growth rate, saw a 42.9% increase, while New Mexico saw the lowest income growth rate at 2.3%.

Visa overstays account for nearly 40% of illegal US entries

In fiscal year 2023, approximately 510,000 people overstayed their visas, while 860,000 crossed the border illegally, meaning overstays accounted for 37% of the total number of new unauthorized arrivals. This represents a shift from 2007 to 2018, when overstays outnumbered border crossings, to 2019, when illegal crossings surged again.

An interactive map of race and ethnicity across the US

This map by CNN shows race and ethnicity across the United States. America is more diverse and has more people than ever before. According to the 2020 census, much of its growth is occurring in and around metropolitan areas. By plotting the US...

Every US state's top import partner

Mexico, Canada, and China are the top trade partners for 42 of the states.

European diseases killed a massive share of the Native American population

After Western contact, epidemic diseases devastated Indigenous communities. By 1920, the Native American population of the US had fallen to roughly 270,000, compared with an estimated 1.2 to 18 million at the time of European arrival.

Both parties largely agree that America's immigration system is broken

This three‑part podcast series traces America's immigration system origins, revealing how historically celebrated Ellis Island-era policies evolved into today's fractured, fact‑starved debate—shedding light on economic, cultural, and political forces shaping the current dysfunction.

How America's cocaine habit fueled its migrant crisis

The United States has been facing a migration crisis along its southern border. Thousands of people have been fleeing their homes in Central America, traveling north through Mexico, and claiming asylum in the USA. Much of this crisis can be traced...

Charting the countries with large Sikh populations

While the vast majority of contemporary Sikhs live in Punjab, India, millions have moved elsewhere in the world, especially in anglophone countries. This chart shows which countries host the largest communities of the Sikh diaspora in the world.

Cities bore the brunt of the migrant surge in the 2020s

During the 2022-24 migration surge, cities such as New York, Chicago, and Denver faced shelter overcrowding, strained public services, and housing shortages—while the upfront costs fell almost entirely to states and cities.

It's likely a myth that Ellis Island inspectors changed immigrants' names, but historians say the errors actually happened overseas.

Irish immigrants deserted the US Army to fight for Mexico

During the Mexican-American War, hundreds of Irish Catholic immigrants—facing discrimination in the US Army—defected to Mexico and formed the Saint Patrick’s Battalion. Though many were captured and executed, they remain honored as heroes in Mexico.

The first time the US federally barred immigration based on nationality

Watch this six-minute video to learn about the Chinese Exclusion Act of 1882, which was the first federal law to bar immigration explicitly because of nationality.

The Chinese Exclusion Act was America's first major immigration restriction

The act, signed in 1882, barred Chinese laborers from entering the United States, marking the first significant restriction on free immigration. This overview examines 19th-century Chinese immigration, rising anti-Chinese sentiment, and the diplomatic implications of exclusionary legislation.

Immigration enforcement shows how federalism plays out on the ground

In recent years, federalism has shifted from allowing policy diversity across states to open conflict, with states and the federal government increasingly trying to impose their preferences on one another over issues like abortion, voting, immigration, and public health.

Interactive human migration map

Using archeological, genetic, and climate data, scientists have pieced together an outline of the human odyssey—the journey that took our species from Africa to all corners of the globe. Experience this 200,000-year migration using an interactive human migration map.

A map of slavery's spread across the US

Need a visual on how prevalent slavery was in the US? Scroll through this interactive map and timeline based on census data from 1790 to 1860.

A poll from May 2025 found that a majority of Americans oppose ending birthright citizenship

As legal challenges progressed, a May 2025 NPR/Ipsos poll showed fewer than one-third of Americans supported eliminating birthright citizenship, despite broader public backing for other immigration restrictions.

Nearly 400,000 H-1B applications were approved in 2024

In 2024, nearly 400,000 H-1B petitions were approved, with about 65% of them renewals for existing workers. Roughly 70% of recipients were born in India, and nearly two-thirds of all H-1B jobs were in computer-related fields.

Three ways the US population will change over the next decade

This article lists the top three ways the US population will change over the next decade. Using population data from the US Census Bureau and the UN Population Division, the piece explores what America might look like 10 years from now, which...

The Great Migration spread jazz to various parts of the country

The large-scale migration of Black Americans looking to escape Jim Crow laws in the South began in 1915 and helped bring New Orleans music to other parts of the country, including Chicago, New York, Kansas City, Detroit, and Los Angeles.