NOTE: Gray indicates insufficient data or a suppressed estimate.
Non-Hispanic American Indian population percentages across the Portland metro area are uniformly low, with the vast majority of zip codes registering below 1%, resulting in a predominantly dark-shaded map. The most notable concentration appears in a zip code just west of Vancouver along the Columbia River corridor and a few scattered zip codes near central Portland, where percentages reach roughly 1–3%. Outlying suburban and exurban areas such as Hillsboro, Lake Oswego, and the southern portions of the metro show virtually no measurable concentration, underscoring that even the modest clusters near the urban core represent only marginal variation within an overall very small demographic share.
Data: U.S. Census Bureau, 2023 ACS
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