Highest Black population share, US counties · 2010
US counties ranked by the share of all residents who are Black or African American (2010 American Community Survey). A concentration measure: Black residents as a percentage of total population. Jefferson County, Mississippi leads at 85.4%. 3,131 counties qualify in total. Mississippi carries 14 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 85.4% (2010 Decennial Census).
What are the top 5 counties by black?
Jefferson County, Mississippi, Claiborne County, Mississippi, Holmes County, Mississippi, Macon County, Alabama, Greene County, Alabama.
How many counties are in this ranking?
3,131 counties qualify after filtering for population minimums and data availability. The ranking covers 2010 Decennial Census data.
How is black measured?
Share identifying as Black or African American alone. Source: US Census Bureau, 2010 Decennial Census.