As immigration slows, Miami-Dade's population growth declines
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Miami-Dade County's population shrank last year amid a massive drop in immigration, following a nationwide trend, new U.S. Census data shows.
Why it matters: The data offers the best look yet at how tighter immigration enforcement is affecting America's demographic makeup.
Zoom in: Miami-Dade saw the third-largest numeric population decline among U.S. counties in 2025, data show, following Los Angeles and Pinellas counties, which saw the largest and second-largest declines, respectively.
- The county's population dropped by about 10,100 to 2.8 million people from July 2024 to July 2025.
The intrigue: Miami-Dade County Public Schools has 13,200 fewer students this year compared to the 2024-25 year.
- Enrollment in charter, private and homeschooling has increased in recent years thanks to the state's voucher program, but officials argue the sharp decline also stems from the decline in immigrant families moving to South Florida, WLRN reported.
Between the lines: "The nation's largest counties ... are often international migration hubs," per Census Bureau demographer George M. Hayward.
- "With fewer gains from international migration, these types of counties saw their population growth diminish or even turn into loss."
The big picture: The U.S. overall still grew by 0.5% between 2024-25, but that's down from 1% over the previous period.
Caveat: The Census' international migration data include foreigners and Americans coming home from abroad, including military service members.
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