The U.S. population growth rate fell to 0.5% in 2025, the lowest level since 1919, driven by a sharp decline in immigration that followed stricter Trump administration policies, according to Census Bureau estimates released Tuesday. The nation’s population reached nearly 342 million, but the growth rate plummeted from nearly 1% in 2024, when increased immigration was the primary engine of growth.
The slowdown marks a significant demographic shift that demographers say could affect workforce supply, economic expansion, and the distribution of political power. Immigration, which accounted for 84% of population growth in 2024, represented roughly half that share in 2025.
Immigration’s Sharp Decline Reshapes National Growth
Immigration, which contributed 2.8 million to the nation’s population in 2024, fell to 1.3 million in 2025. The shift was stark: in 2024, international migration accounted for 84% of total population growth, but that share dropped to roughly 47% of the nation’s 2.8 million overall growth in 2025. The Census Bureau’s estimates do not distinguish between legal and undocumented immigration.
Natural increase—births minus deaths—reached 519,000 in 2025, well below the 1.6 to 1.9 million annual gains typical of the 2000s. The combination of reduced immigration and low natural increase signals the scale of the demographic shift reshaping the nation’s trajectory.
State-by-State Reversals
The slowdown in immigration produced dramatic reversals across states that had been traditional magnets for newcomers. California, which added 232,000 residents in 2024, instead lost 9,500 people in 2025. Internal migration—people moving between states—remained roughly constant, but the entire swing came from a collapse in immigration. Net immigration to California fell from 361,000 in 2024 to 109,000 in 2025.
Florida experienced similar pressures. The state drew only 22,000 internal migrants in 2025, compared with 64,000 a year earlier. International immigration fell from more than 411,000 to 178,000. Analysts attribute the decline partly to rising housing costs and elevated home insurance premiums.
New York added just 1,008 residents in 2025, a near-stall driven by immigration decline. Net immigration fell from 207,000 in 2024 to 95,600.
Not all states contracted. South Carolina, Idaho, and North Carolina posted the strongest growth rates, ranging from 1.3% to 1.5%. Texas, Florida, and North Carolina added the most people in absolute numbers. California, Hawaii, New Mexico, Vermont, and West Virginia posted population declines.
The South region, which has been the growth engine of the 2020s, added 1.1 million people in 2025, down from 1.7 million in 2024. Demographer William Frey of the Brookings Institution said the trend suggests further slowdowns ahead. “Many of these states are going to show even less growth when we get to next year,” Frey said.
Policy Context and Agency Challenges
The Census Bureau released figures covering July 2024 through July 2025—spanning the end of the Biden administration and the first six months of Trump’s return to office. The period captured the beginning of immigration enforcement operations in Los Angeles and Portland, Oregon, but not the larger raids that followed in Chicago, New Orleans, Memphis, and Minneapolis.
Trump made the surge of migrants at the southern border a central campaign theme in his 2024 race, and the new figures reflect the impact of enforcement changes. Eric Jensen, a senior research scientist at the Census Bureau, said the numbers reflect shifting migration patterns: “They reflect the recent trends we have seen in outbound migration, where the number of people entering has decreased and the number of people leaving has increased.”
Census Bureau officials acknowledged workforce challenges as the agency released the estimates. The bureau lost approximately 15% of its workforce in 2025 through voluntary separations and layoffs, part of broader cost-reduction efforts by the Trump administration. Despite concern from some analysts about potential political interference at federal statistical agencies, Frey said the Census Bureau’s work appears to have proceeded normally. “I have no reason to doubt the numbers being published,” Frey said.
Population growth affects workforce supply, economic expansion, and the distribution of political representation. If current immigration trends continue, the Census Bureau projects that immigration will add only 321,000 people by mid-2026—less than one-quarter the 2024 rate.