NOTE: Gray indicates insufficient data or a suppressed estimate.
The South Side of Chicago and surrounding southern suburbs display the highest concentrations of Non-Hispanic Black residents, with many zip codes exceeding 50% and several reaching near 100%, forming a contiguous belt stretching from Englewood south through the city limits and into adjacent areas of Gary and Hammond, Indiana. In stark contrast, the northern and western suburbs—including Palatine, Schaumburg, Naperville, and the far northwest exurbs—register percentages near 0–5%, illustrating the deeply entrenched racial residential segregation that characterizes the Chicago metropolitan area. A transitional band of moderate percentages (10–30%) is visible along the edges of the predominantly Black core, particularly in areas like Cicero and portions of the near south and west sides.
Data: U.S. Census Bureau, 2023 ACS
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