NOTE: Gray indicates insufficient data or a suppressed estimate.
The highest concentrations of Non-Hispanic American Indian population in Iowa are clustered in the central part of the state, corresponding to the Meskwaki Nation settlement near Tama, where zip codes reach approximately 15-25% representation. A secondary cluster appears along the western border in the Sioux City metropolitan area, with zip codes reflecting 5-10% concentrations likely tied to proximity to the Winnebago and Omaha reservations in neighboring Nebraska. The vast majority of Iowa's zip codes register at or near 0%, underscoring how heavily concentrated the state's Native American population is in just a few geographic areas.
Data: U.S. Census Bureau, 2023 ACS
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