Most foreign-born residents, US counties
US counties ranked by the share of residents born outside the US (2024 ACS). Miami-Dade County, Florida leads at 54.5%. 3,144 counties qualify in total. California carries 6 of the top 25 entries. The median across all 3,144 is 2.9%. Biggest climber in the top 100 since 2020: Stanton County, KS, up 215 places to #16.
UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES
Frequently asked
Which county has the highest foreign-born?
Miami-Dade County, Florida ranks #1 with 54.5% (2024 American Community Survey).
What are the top 5 counties by foreign-born?
Miami-Dade County, Florida, Queens County, New York, Kenedy County, Texas, Aleutians West Census Area, Alaska, Hudson County, New Jersey.
How many counties are in this ranking?
3,144 counties qualify after filtering for population minimums and data availability. The ranking covers 2024 ACS 5-year data.
How is foreign-born measured?
Share of residents born outside the United States. Source: US Census Bureau, American Community Survey 5-year estimates (2024).