U.S. Citizens (% of Population Over 18) by Zip Code (ZCTA5) — Ohio

NOTE: Gray indicates insufficient data or a suppressed estimate.

The vast majority of Ohio zip codes report U.S. citizenship rates above 95% among the adult population, with near-universal citizenship across rural areas in the western, southern, and eastern portions of the state. Notable concentrations of lower citizenship rates—dropping to 75-85%—appear in the Columbus metropolitan area, the Cleveland-Akron corridor in the northeast, and a distinct cluster along the southwestern border near Cincinnati, corresponding to regions with larger immigrant communities. A particularly dark-shaded zip code in the south-central part of the state, likely associated with a specific institutional or demographic anomaly, stands out as an outlier against the otherwise uniformly high citizenship rates in non-metropolitan Ohio.

Data: U.S. Census Bureau, 2023 ACS

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