Highest Black population share, US counties · 2000
US counties ranked by the share of all residents who are Black or African American (2000 American Community Survey). A concentration measure: Black residents as a percentage of total population. Jefferson County, Mississippi leads at 86.0%. 3,125 counties qualify in total. Mississippi carries 12 of the top 25 entries.
UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS
Frequently asked
Which county has the highest black?
Jefferson County, Mississippi ranks #1 with 86.0% (2000 Decennial Census).
What are the top 5 counties by black?
Jefferson County, Mississippi, Macon County, Alabama, Claiborne County, Mississippi, Greene County, Alabama, Petersburg, Virginia.
How many counties are in this ranking?
3,125 counties qualify after filtering for population minimums and data availability. The ranking covers 2000 Decennial Census data.
How is black measured?
Share identifying as Black or African American alone. Source: US Census Bureau, 2000 Decennial Census.