Montana Non-Hispanic American Indian and Alaska Native Alone Citizen Population By County in 2018 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2018, the Non-Hispanic American Indian & Alaska Native Alone citizen population for Montana was 23,235 and represented 2.25% of the total Montana citizen population.

Among all Montana counties, Glacier had the highest Non-Hispanic American Indian & Alaska Native Alone citizen population (8.82K), followed by Big Horn (8.66K), and Lake (7.06K).

In terms of percentages, Big Horn had the highest percentage of its citizen population being Non-Hispanic American Indian & Alaska Native Alone (65.33%), followed by Glacier (65.06%), and Roosevelt (55.92%).

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 2018
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County Citizen Population % of County Citizen Population
Glacier 8815 65.06
Big Horn 8660 65.33
Lake 7060 23.95
Yellowstone 6375 4.08
Roosevelt 6235 55.92
Hill 3700 22.67
Cascade 3640 4.49
Rosebud 3430 37.41
Blaine 3330 49.52
Missoula 2575 2.25
Flathead 1450 1.49
Lewis and Clark 1150 1.73
Chouteau 1085 18.87
Pondera 870 14.49
Silver Bow 820 2.39
Gallatin 750 0.73
Valley 635 8.50
Phillips 420 10.24
Sanders 395 3.46
Ravalli 385 0.93
Richland 340 3.03
Powell 280 4.09
Beaverhead 235 2.56
Toole 205 4.13
Dawson 190 2.08
Custer 180 1.53
Deer Lodge 155 1.72
Carbon 140 1.33
Lincoln 135 0.71
Jefferson 130 1.11
Mineral 105 2.49
Stillwater 95 1.02
Fergus 80 0.72
Madison 75 0.95
Broadwater 70 1.21
Park 70 0.44
Teton 55 0.91
Sheridan 45 1.27
Sweet Grass 40 1.10
Judith Basin 30 1.54
McCone 30 1.85
Meagher 30 1.54
Fallon 25 0.89
Powder River 25 1.56
Wheatland 25 1.19
Daniels 15 0.86
Granite 15 0.46
Musselshell 10 0.21
Carter 4 0.30
Prairie 4 0.30
Wibaux 4 0.35
Garfield 0 0.00
Golden Valley 0 0.00
Liberty 0 0.00
Petroleum 0 0.00
Treasure 0 0.00