Largest Black population, US counties
US counties ranked by the number of residents who are Black or African American, from the 2024 American Community Survey (table B03002). Each list covers the full eligible universe; download the complete data as CSV. Cook County, Illinois leads at 1,130,881. 3,144 counties qualify in total. Florida carries 4 of the top 25 entries.
UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES
Frequently asked
Which county has the highest black population?
Cook County, Illinois ranks #1 with 1,130,881 (2024 American Community Survey).
What are the top 5 counties by black population?
Cook County, Illinois, Harris County, Texas, Los Angeles County, California, Kings County, New York, Wayne County, Michigan.
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 black population measured?
Number of residents who are Black or African American (derived from the ACS race table B03002). Source: US Census Bureau, American Community Survey 5-year estimates (2024).