Population Non-Hispanic Black % by Zip Code (ZCTA5) — St. Louis Metro

NOTE: Gray indicates insufficient data or a suppressed estimate.

The Non-Hispanic Black population in the St. Louis metro is heavily concentrated in a north-south corridor running from the Florissant area through north St. Louis city, where many zip codes exceed 50% and several approach near-total concentration above 90%. A stark racial boundary is evident, with zip codes to the south and southwest—particularly in the outer suburban ring—dropping sharply to below 5%, reflecting the deeply entrenched patterns of residential segregation that have historically defined the region. St. Charles and St. Peters to the west similarly register very low percentages, generally under 10%, contrasting sharply with the adjacent inner-ring suburbs of north St. Louis County.

Data: U.S. Census Bureau, 2023 ACS

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