Montana Non-Hispanic American Indian and Alaska Native Alone Citizen Population By County in 2021 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the Non-Hispanic American Indian & Alaska Native Alone citizen population for Montana was 17,485 and represented 1.64% of the total Montana citizen population.

Among all Montana counties, Glacier had the highest Non-Hispanic American Indian & Alaska Native Alone citizen population (8.79K), followed by Big Horn (8.61K), and Lake (6.71K).

In terms of percentages, Big Horn had the highest percentage of its citizen population being Non-Hispanic American Indian & Alaska Native Alone (65.31%), followed by Glacier (64.22%), and Roosevelt (58.52%).

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 2021
Montana Non-Hispanic American Indian and Alaska Native Alone Citizen Population By County in 2021
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County Citizen Population % of County Citizen Population
Glacier 8785 64.22
Big Horn 8605 65.31
Lake 6710 21.88
Yellowstone 6350 3.91
Roosevelt 6335 58.52
Hill 3840 23.74
Blaine 3560 50.71
Cascade 3240 3.87
Rosebud 3160 37.66
Missoula 2440 2.11
Chouteau 1125 19.15
Flathead 1040 1.02
Pondera 860 14.63
Lewis and Clark 795 1.14
Gallatin 785 0.68
Silver Bow 785 2.26
Valley 715 9.49
Sanders 440 3.60
Ravalli 370 0.85
Powell 325 4.69
Toole 285 5.73
Phillips 280 6.72
Lincoln 260 1.34
Dawson 150 1.68
Deer Lodge 145 1.57
Fergus 140 1.23
Musselshell 135 2.84
Jefferson 115 0.96
Beaverhead 110 1.19
Fallon 110 3.60
Teton 105 1.71
Custer 95 0.80
Stillwater 95 1.07
Mineral 75 1.68
Meagher 70 3.67
McCone 65 3.65
Carbon 60 0.57
Sheridan 60 1.72
Broadwater 55 0.84
Park 55 0.33
Daniels 45 2.59
Powder River 40 2.31
Madison 35 0.42
Sweet Grass 30 0.81
Judith Basin 25 1.26
Granite 20 0.61
Richland 15 0.14
Wheatland 10 0.48
Wibaux 10 1.00
Carter 4 0.30
Golden Valley 4 0.49
Liberty 4 0.20
Prairie 4 0.34
Treasure 4 0.58
Garfield 0 0.00
Petroleum 0 0.00