Population growth across the United States has slowed to its weakest pace since the height of the COVID-19 pandemic, driven largely by a steep drop in immigration that economists warn could have lasting consequences for the country’s economic health. According to a new report from the US Census Bureau, the nation’s population reached 342 million between July 2024 and July 2025, increasing by just 1.8 million — the smallest annual gain in years.
The findings, highlighted in reporting by the Financial Times, show that the slowdown was widespread, with most US counties experiencing weaker growth and around 40 percent recording outright population declines. Even regions that had previously expanded saw growth stall or reverse, signalling a broad demographic shift.
At the heart of the slowdown is a dramatic fall in net international migration, which dropped by more than 50 percent compared with the previous year — the largest decline since 2020. The Census Bureau attributed the national trend primarily to this sharp reduction in inflows, underscoring the critical role immigration plays in sustaining population and economic growth.
The impact is particularly acute in major urban centres such as New York City, where international migration has traditionally offset losses from domestic outflows. In the latest data, international arrivals to the city fell by nearly two-thirds, while the number of residents leaving for other parts of the country increased significantly. This dual pressure threatens the long-term vitality of large metropolitan economies that rely on a steady influx of global talent and workers.
Experts warn that without a rebound in immigration, growth in major cities will depend heavily on changes in housing affordability or policy reforms. Jed Kolko of the Peterson Institute for International Economics noted that high living costs continue to push residents toward smaller, cheaper regions, compounding the effects of declining international inflows.
Meanwhile, population growth has shifted դեպի southern regions, with counties near cities like Dallas and Houston emerging as some of the fastest-growing areas. However, analysts caution that these gains may not fully offset broader national trends driven by reduced migration.
The slowdown comes during the early phase of Donald Trump’s second term, following stricter immigration enforcement measures introduced under both his administration and that of Joe Biden. The current administration has significantly expanded funding for immigration enforcement through Immigration and Customs Enforcement, alongside policies aimed at increasing deportations and tightening legal entry requirements.
These measures have included large-scale enforcement operations and stricter visa processes, such as heightened screening and increased costs for foreign worker programmes. Economists say such policies are already reshaping migration patterns, with tangible effects on the labour market and business activity.
Research cited by the Financial Times, including estimates from the Brookings Institution, suggests the economic consequences could be significant. Reduced immigration is expected to lower consumer spending by between $10 billion and $40 billion this year, while shaving up to 0.3 percentage points off GDP growth.
Academics warn that the economic contributions of immigrants — from workforce participation to entrepreneurship — cannot be easily replaced or quickly restored. Zeke Hernandez of the Wharton School emphasized that immigration systems take time to rebuild once disrupted, meaning the current slowdown could have prolonged effects.
As the US grapples with demographic stagnation, the data signals a growing tension between immigration policy and economic performance, raising questions about how the country will sustain growth in the years ahead.
