Montana Non-Hispanic White 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 White Alone citizen population for Montana was 3,187,680 and represented 309.18% of the total Montana citizen population.

Among all Montana counties, Yellowstone had the highest Non-Hispanic White Alone citizen population (136.26K), followed by Missoula (103.13K), and Gallatin (95.31K).

In terms of percentages, Garfield had the highest percentage of its citizen population being Non-Hispanic White Alone (100.00%), followed by Petroleum (98.84%), and Prairie (98.50%).

The chart and table below shows the Non-Hispanic White Alone citizen population of each county and the percentage of each county's citizen 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 Population By County in 2018
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County Citizen Population % of County Citizen Population
Yellowstone 136260 87.13
Missoula 103125 90.27
Gallatin 95305 92.84
Flathead 90865 93.27
Cascade 69605 85.80
Lewis and Clark 61190 91.77
Ravalli 38815 93.27
Silver Bow 31245 91.09
Lake 19310 65.50
Lincoln 17865 93.63
Park 15075 93.69
Hill 11440 70.08
Jefferson 10925 93.02
Custer 10890 92.52
Fergus 10565 94.42
Sanders 10315 90.28
Richland 10100 90.14
Carbon 9925 94.39
Stillwater 8705 93.25
Beaverhead 8510 92.70
Dawson 8425 92.43
Deer Lodge 8195 90.75
Madison 7505 94.82
Valley 6340 84.87
Powell 6150 89.78
Teton 5675 93.80
Broadwater 5455 93.97
Rosebud 5110 55.73
Pondera 4880 81.27
Musselshell 4615 96.25
Chouteau 4420 76.87
Toole 4355 87.80
Glacier 4180 30.85
Roosevelt 3915 35.11
Mineral 3855 91.57
Big Horn 3610 27.24
Phillips 3455 84.27
Sweet Grass 3385 93.12
Sheridan 3225 91.23
Granite 3105 95.69
Blaine 3040 45.20
Fallon 2635 94.11
Liberty 2220 97.37
Wheatland 2005 95.02
Judith Basin 1855 95.37
Meagher 1845 94.62
Daniels 1635 93.70
McCone 1530 94.44
Powder River 1490 93.13
Prairie 1310 98.50
Carter 1280 96.97
Garfield 1140 100.00
Wibaux 1110 96.10
Treasure 745 96.13
Golden Valley 645 88.97
Petroleum 425 98.84