Ranking of Idaho Counties By Voting-age Population Percentage from Census 2020
Updated on August 22, 2023.
According to the data from the US 2020 Census, as at April 2020, Clearwater County had the highest voting-age population percentage in Idaho (83.63%), followed by Boise County (83.52%), and Custer County (82.76%).
The chart below shows the top 10 counties with high voting-age population percentage, and the table below shows the ranking of all Idaho counties based on the percentage of the population that were in the voting-age (18 years and over) group.
You can also see the ranking of counties by population for other states as well as for the whole United States.
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Related Topics: Idaho Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of Idaho Counties By Voting-age Population Percentage from Census 2020
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| Rank | County | % of County Voting-age Population |
|---|---|---|
| 1 | Clearwater County | 83.63 |
| 2 | Boise County | 83.52 |
| 3 | Custer County | 82.76 |
| 4 | Adams County | 82.64 |
| 5 | Valley County | 81.39 |
| 6 | Lemhi County | 81.14 |
| 7 | Bonner County | 80.47 |
| 8 | Shoshone County | 80.41 |
| 9 | Latah County | 80.35 |
| 10 | Idaho County | 80.22 |
| 11 | Madison County | 79.64 |
| 12 | Lewis County | 79.17 |
| 13 | Blaine County | 78.91 |
| 14 | Nez Perce County | 78.50 |
| 15 | Benewah County | 77.95 |
| 16 | Kootenai County | 77.15 |
| 17 | Camas County | 76.97 |
| 18 | Boundary County | 76.72 |
| 19 | Washington County | 76.57 |
| 20 | Ada County | 76.47 |
| 21 | Gem County | 76.33 |
| 22 | Elmore County | 74.81 |
| 23 | Butte County | 74.67 |
| 24 | Teton County | 74.08 |
| 25 | Bannock County | 73.96 |
| 26 | Payette County | 73.47 |
| 27 | Clark County | 73.42 |
| 28 | Owyhee County | 73.21 |
| 29 | Twin Falls County | 72.71 |
| 30 | Bear Lake County | 72.66 |
| 31 | Fremont County | 72.44 |
| 32 | Gooding County | 72.29 |
| 33 | Canyon County | 72.02 |
| 34 | Lincoln County | 72.01 |
| 35 | Oneida County | 71.71 |
| 36 | Minidoka County | 71.18 |
| 37 | Caribou County | 70.74 |
| 38 | Power County | 69.82 |
| 39 | Jerome County | 69.62 |
| 40 | Bonneville County | 69.54 |
| 41 | Bingham County | 69.42 |
| 42 | Cassia County | 68.95 |
| 43 | Franklin County | 68.21 |
| 44 | Jefferson County | 65.95 |