% of Population without Health Insurance, by Zip Code (ZCTA5) — Pennsylvania

NOTE: Gray indicates insufficient data or a suppressed estimate.

Uninsured rates across Pennsylvania exhibit stark geographic contrasts, with most zip codes in the dark purple range (under 5-10%), while notable clusters of high uninsurance (25-50%, shown in yellow and green) emerge in the central part of the state—likely corresponding to Amish and Plain community populations in Lancaster, Mifflin, and Centre counties—as well as a small cluster in northwestern Pennsylvania near Erie County. The Philadelphia and Pittsburgh metropolitan peripheries generally maintain low uninsured rates, though pockets of moderate uninsurance (10-15%) appear within urban cores. Rural zip codes across the northern tier and Appalachian regions display considerable variability, with gray areas indicating missing data that may reflect sparsely populated zones where reliable estimates are difficult to produce.

Data: U.S. Census Bureau, 2023 ACS

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