Montana Citizen Voting-age Population By County in 2010 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2010, the citizen voting-age population for Montana was 742,845 and represented 76.29% of the total Montana population.
Among all Montana counties, Yellowstone had the highest citizen voting-age population (108.95K), followed by Missoula (84.29K), and Gallatin (67.99K).
In terms of percentages, Prairie had the highest percentage of its population being citizens of voting-age (87.62%), followed by Judith Basin (83.72%), and Powell (82.26%).
The chart and table below shows the citizen voting-age population of each county and the percentage of each county's population that were citizens of voting-age.
You can see similar information for other states and by state for the United States.
| County | Citizen Voting-age Population | % of County Population |
|---|---|---|
| Yellowstone | 108950 | 75.63 |
| Missoula | 84290 | 78.56 |
| Gallatin | 67990 | 77.55 |
| Flathead | 67040 | 75.14 |
| Cascade | 61195 | 75.96 |
| Lewis and Clark | 46880 | 76.05 |
| Ravalli | 30665 | 76.63 |
| Silver Bow | 26205 | 77.54 |
| Lake | 21025 | 73.79 |
| Lincoln | 15470 | 79.31 |
| Park | 12385 | 78.64 |
| Hill | 11610 | 72.54 |
| Glacier | 9035 | 68.19 |
| Fergus | 9005 | 78.20 |
| Sanders | 8920 | 78.49 |
| Custer | 8870 | 76.80 |
| Jefferson | 8595 | 76.98 |
| Big Horn | 8435 | 66.60 |
| Carbon | 7770 | 77.74 |
| Deer Lodge | 7535 | 81.28 |
| Dawson | 7165 | 80.19 |
| Richland | 7140 | 75.16 |
| Beaverhead | 7115 | 77.93 |
| Roosevelt | 6990 | 68.03 |
| Stillwater | 6825 | 76.39 |
| Rosebud | 6330 | 69.29 |
| Madison | 6085 | 80.17 |
| Powell | 5820 | 82.26 |
| Valley | 5540 | 75.43 |
| Teton | 4660 | 76.33 |
| Pondera | 4600 | 74.86 |
| Blaine | 4525 | 69.94 |
| Chouteau | 4175 | 72.42 |
| Toole | 3970 | 77.16 |
| Broadwater | 3870 | 73.23 |
| Musselshell | 3480 | 80.18 |
| Mineral | 3300 | 78.67 |
| Phillips | 3205 | 76.22 |
| Sheridan | 2835 | 80.88 |
| Sweet Grass | 2755 | 74.16 |
| Granite | 2470 | 81.12 |
| Fallon | 2145 | 76.20 |
| Liberty | 1720 | 76.11 |
| Wheatland | 1720 | 81.13 |
| Judith Basin | 1645 | 83.72 |
| Meagher | 1530 | 75.56 |
| Daniels | 1280 | 77.58 |
| McCone | 1280 | 74.64 |
| Powder River | 1265 | 76.21 |
| Carter | 1060 | 82.17 |
| Prairie | 955 | 87.62 |
| Garfield | 940 | 76.74 |
| Wibaux | 845 | 79.34 |
| Treasure | 660 | 77.65 |
| Golden Valley | 605 | 74.69 |
| Petroleum | 455 | 75.83 |
