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

NOTE: Gray indicates insufficient data or a suppressed estimate.

The vast majority of Missouri zip codes report U.S. citizenship rates above 95% among the adult population, with near-universal citizenship across rural areas in the southern, central, and northern portions of the state. Notable exceptions cluster around the Kansas City and St. Louis metropolitan areas, as well as a pocket in the southwestern corner near the Monett/Noel area, where several zip codes dip below 80%, likely reflecting higher concentrations of immigrant populations. A few scattered zip codes in central Missouri, particularly around the Columbia area, also show moderately lower citizenship rates in the 85–92% range, possibly influenced by university-affiliated international populations.

Data: U.S. Census Bureau, 2023 ACS

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