NOTE: Gray indicates insufficient data or a suppressed estimate.
Central Wisconsin zip codes, particularly in the areas around Portage, Marathon, and Adams counties, display the highest uninsured rates in the state, with several zip codes exceeding 20–30% and forming a distinct cluster of yellow and green tones. In contrast, the northern rural regions and the southeastern Milwaukee–Racine metropolitan corridor generally maintain lower uninsured rates below 5–10%, appearing in deep purple. The elevated uninsured cluster in central Wisconsin likely reflects concentrations of agricultural and seasonal workers, while a secondary pocket of higher uninsured rates is visible near Walworth County in the state's southern border region.
Data: U.S. Census Bureau, 2023 ACS
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