Montana Non-Hispanic American Indian and Alaska Native Alone Citizen Population By County in 2015 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2015, the Non-Hispanic American Indian & Alaska Native Alone citizen population for Montana was 22,230 and represented 2.21% of the total Montana citizen population.

Among all Montana counties, Glacier had the highest Non-Hispanic American Indian & Alaska Native Alone citizen population (8.61K), followed by Big Horn (8.24K), and Lake (6.78K).

In terms of percentages, Glacier had the highest percentage of its citizen population being Non-Hispanic American Indian & Alaska Native Alone (63.92%), followed by Big Horn (63.10%), and Roosevelt (55.68%).

The chart and table below shows the Non-Hispanic American Indian & Alaska Native Alone citizen population of each county and the percentage of each county's citizen population that were Non-Hispanic American Indian & Alaska Native Alone.

You can see similar information for other states and by state for the United States.

You can also see similar information for other ethnicities.

See this for other years:
Montana Non-Hispanic American Indian and Alaska Native Alone Citizen Population By County in 2015
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County Citizen Population % of County Citizen Population
Glacier 8610 63.92
Big Horn 8235 63.10
Lake 6780 23.48
Yellowstone 6330 4.15
Roosevelt 6150 55.68
Hill 3685 22.43
Cascade 3385 4.16
Blaine 3170 48.29
Rosebud 3145 33.78
Missoula 2765 2.50
Lewis and Clark 1500 2.31
Flathead 1410 1.52
Chouteau 1115 19.27
Pondera 870 14.24
Gallatin 840 0.90
Valley 770 10.25
Silver Bow 515 1.52
Sanders 495 4.39
Phillips 410 9.90
Ravalli 330 0.81
Powell 265 3.81
Lincoln 255 1.33
Toole 255 4.99
Dawson 250 2.70
Richland 250 2.28
Custer 220 1.85
Fergus 175 1.54
Deer Lodge 140 1.53
Jefferson 140 1.23
Park 140 0.90
Carbon 130 1.28
Beaverhead 105 1.16
Teton 105 1.75
Broadwater 80 1.41
Sheridan 65 1.81
McCone 55 3.19
Liberty 40 1.70
Madison 40 0.52
Stillwater 40 0.43
Musselshell 35 0.74
Powder River 25 1.47
Garfield 20 1.91
Judith Basin 20 1.00
Mineral 20 0.47
Daniels 15 0.86
Prairie 15 1.10
Wheatland 15 0.71
Fallon 10 0.33
Meagher 10 0.53
Carter 4 0.33
Granite 4 0.13
Golden Valley 0 0.00
Petroleum 0 0.00
Sweet Grass 0 0.00
Treasure 0 0.00
Wibaux 0 0.00