Recent analysis reveals that President Donald Trump’s immigration policies have led to a notable decline in net international migration (NIM) across all states, the District of Columbia, and a significant portion of U.S. counties.
The U.S. Census Bureau released its 2025 Vintage Population Estimates on Thursday, which provide insights into these trends.
Declines in International Immigration Nationwide
The data indicates that every state and approximately 90% of the nation’s 3,144 counties experienced a decline in NIM from 2024 to 2025. The remaining 10% of counties saw no significant changes in migration patterns.
Despite the overall decline in international net migration over several years, individual states did not necessarily record negative NIM figures, implying a greater number of arrivals than departures. Specifically, while NIM levels were lower than previous years, they remained more positive in 2025 compared to 2024.
International Migration Dynamics Across States and Counties
Diving deeper into the figures, Florida emerged as the state with the highest NIM total in 2025, witnessing an influx of 178,674 international migrants. In contrast, West Virginia had the lowest total, with just 244 new arrivals.
Counties with the greatest NIM estimates for 2025 include Harris in Texas, Miami, and Los Angeles. Collectively, the five states with the highest NIM—Florida, Texas, California, New York, and New Jersey—accounted for nearly half (47.9%) of the total net overseas migration in the country. Furthermore, the ten counties with the highest estimates represented about one-quarter (24.5%) of all NIM nationwide, all of which are among the 50 most populous counties, each projected to exceed one million residents by 2025.
Understanding Net International Migration (NIM)
Net International Migration (NIM) is defined as the annual balance between immigrants arriving in the U.S. and those leaving. A positive NIM reflects a higher number of incoming migrants compared to those moving out, while a negative figure indicates the opposite. The Census Bureau generates these estimates annually along with data on births, deaths, and internal migration to inform population estimates at national, state, and county levels.
Factors Influencing Migration Trends
While the Census data does not explicitly link population shifts to specific policies from the Trump administration, the persistent decline in net international immigration aligns with the administration’s stringent deportation efforts and immigration restrictions. Furthermore, legal immigration rates dropped from various countries during the first eight months of 2025, as noted in State Department statistics.
Julia Gelatt, an associate director at the Migration Policy Institute, highlighted that the latest census findings mirror the tightening of immigration policies that began in the latter part of the Biden administration and escalated significantly under Trump.
In response to evolving migration trends, the U.S. Census Bureau has taken steps to enhance the accuracy of its net international migration estimates at both state and county levels, seeking to better capture recent changes in migration flows. This report was compiled from Los Angeles.
