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

NOTE: Gray indicates insufficient data or a suppressed estimate.

The vast majority of Wyoming zip codes report U.S. citizenship rates above 95% among the adult population, with near-universal citizenship (100%) prevalent across rural areas in the eastern plains, central basins, and northern regions. Notable exceptions cluster in the western part of the state near Jackson (Teton County area), where citizenship rates drop to approximately 80–85%, and in a few zip codes near Casper and the south-central border region where rates fall below 75%. The lower citizenship percentages in the Jackson area likely reflect the concentration of immigrant labor supporting the tourism and hospitality industries in that resort economy.

Data: U.S. Census Bureau, 2023 ACS

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