Most segregated, US counties
US counties ranked by the CensusEasy Segregation Score, the White vs non-White index of dissimilarity across census tracts (2024 ACS). Higher means residents are more sorted into separate neighborhoods. Apache County, Arizona leads at 83. 2,917 counties qualify in total. The top 25 average 65, against an all-counties median of 24. Biggest climber in the top 100 since 2020: Gilmer County, WV, up 2,732 places to #9.
Flip the list · Least segregated, US counties →UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES
Frequently asked
Which county has the highest segregation score?
Apache County, Arizona ranks #1 with 83 (2024 American Community Survey).
What are the top 5 counties by segregation score?
Apache County, Arizona, Lyman County, South Dakota, Blaine County, Montana, Franklin, Virginia, San Juan County, Utah.
How many counties are in this ranking?
2,917 counties qualify after filtering for population minimums and data availability. The ranking covers 2024 ACS 5-year data.
How is segregation score measured?
CensusEasy Segregation Score (0 to 100): the index of dissimilarity between White and all other residents measured across the census tracts within a county or metro. It reads as the share of residents who would have to move neighborhoods for every tract to match the area's overall racial split. Available for counties and metros, 2020 and 2024. Source: US Census Bureau, American Community Survey 5-year estimates (2024).