Montana Non-Hispanic White Alone Citizen Voting-age 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 White Alone citizen voting-age population for Montana was 2,548,850 and represented 316.92% of the total Montana citizen voting-age population.

Among all Montana counties, Yellowstone had the highest Non-Hispanic White Alone citizen voting-age population (107.24K), followed by Missoula (84.53K), and Gallatin (76.52K).

In terms of percentages, Garfield had the highest percentage of its citizen voting-age population being Non-Hispanic White Alone (100.00%), followed by Prairie (99.51%), and Petroleum (98.55%).

The chart and table below shows the Non-Hispanic White Alone citizen voting-age population of each county and the percentage of each county's citizen voting-age population that were Non-Hispanic White 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 White Alone Citizen Voting-age Population By County in 2018
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County Citizen Voting-age Population % of County Citizen Voting-age Population
Yellowstone 107240 89.93
Missoula 84530 91.79
Gallatin 76520 93.71
Flathead 71300 94.21
Cascade 55200 87.91
Lewis and Clark 48560 93.13
Ravalli 31540 94.49
Silver Bow 25145 92.12
Lake 15915 71.29
Lincoln 14725 94.15
Park 12375 94.68
Hill 8920 75.59
Jefferson 8745 94.24
Custer 8625 93.95
Sanders 8575 91.66
Fergus 8390 94.27
Carbon 8190 95.29
Richland 7645 90.42
Beaverhead 7060 93.88
Deer Lodge 7020 92.25
Stillwater 6880 94.38
Dawson 6605 92.31
Madison 6340 95.48
Powell 5210 89.14
Valley 5065 86.88
Teton 4345 94.15
Broadwater 4330 93.02
Rosebud 4120 63.68
Pondera 3845 85.83
Musselshell 3700 97.63
Toole 3530 88.58
Chouteau 3470 79.41
Glacier 3260 35.26
Mineral 3180 92.17
Roosevelt 3130 41.99
Big Horn 3055 34.87
Phillips 2725 87.06
Sweet Grass 2660 92.68
Granite 2635 98.32
Sheridan 2595 93.35
Blaine 2390 50.69
Fallon 2020 95.06
Liberty 1745 97.76
Judith Basin 1535 96.24
Wheatland 1530 96.53
Meagher 1510 96.80
Daniels 1295 93.84
McCone 1265 98.06
Powder River 1260 93.33
Carter 1035 97.64
Prairie 1010 99.51
Garfield 900 100.00
Wibaux 780 95.12
Treasure 600 96.00
Golden Valley 570 95.80
Petroleum 340 98.55