Population Non-Hispanic American Indian % by Zip Code (ZCTA5) — Montana

NOTE: Gray indicates insufficient data or a suppressed estimate.

Zip codes with the highest Non-Hispanic American Indian population shares—frequently exceeding 50% and approaching 100%—concentrate visibly on Montana's major reservation lands, including the Flathead Reservation in the northwest, the Blackfeet and Rocky Boy's reservations in the north-central region, the Fort Belknap and Fort Peck reservations in the northeast, and the Crow and Northern Cheyenne reservations in the south-central to southeastern part of the state. These reservation clusters create stark contrasts with surrounding zip codes, which typically fall below 3–5%, particularly across the broad swaths of southwestern, south-central, and western Montana dominated by dark purple shading. Urban areas such as Billings, Great Falls, and Missoula generally register low single-digit percentages, though they show slightly elevated shares compared to their more rural, non-reservation neighbors.

Data: U.S. Census Bureau, 2023 ACS

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