In Idaho, 10% of 18-year-olds are registered to vote, compared to 79% of voters 45+
Teens have the power to close the gap.
Learn MoreIdaho Voter Registration Gap
This maps shows the most recent county-level voter registration rates in Idaho, one of a set of 39 states we currently track. Rates are shown for both 18-year-olds and adults ages 45 and older. Click a county to learn more about voter registration in there.
Idaho
10% of 18-year-olds are registered to vote as of May 11, 2026.
Learn more about this information.
High school communities can close the gap in Idaho.
Student-led, non-partisan voter registration drives in school ensure every student has the chance to get ready to vote before they graduate.
Idaho County Registration Rates
This table shows the voter registration rates in each Idaho county or county-equivalent as of May 11, 2026. We omit counties with 18-year-old populations below 100.
See our methods for more details.
| 18 vs 45+ | |||||
|---|---|---|---|---|---|
| Ada County | 14% | 82% | 6,749 | 518,935 | |
| Bannock County | 23% | 77% | 1,372 | 89,454 | |
| Bear Lake County | 7% | 83% | 119 | 6,650 | |
| Bingham County | 10% | 74% | 585 | 49,664 | |
| Blaine County | 8% | 79% | 400 | 24,951 | |
| Boise County | 5% | 83% | 139 | 8,273 | |
| Bonner County | 12% | 85% | 427 | 51,049 | |
| Bonneville County | 11% | 79% | 1,576 | 129,523 | |
| Boundary County | 19% | > 90% | 134 | 13,172 | |
| Canyon County | 10% | 73% | 3,431 | 250,790 | |
| Cassia County | 7% | 68% | 307 | 25,483 | |
| Elmore County | 5% | 73% | 469 | 29,321 | |
| Franklin County | 10% | 85% | 155 | 15,056 | |
| Fremont County | 22% | 76% | 167 | 13,943 | |
| Gem County | 11% | 78% | 233 | 20,614 | |
| Gooding County | 13% | 64% | 186 | 15,931 | |
| Idaho County | 18% | 82% | 131 | 17,432 | |
| Jefferson County | 12% | 84% | 430 | 33,154 | |
| Jerome County | 8% | 60% | 334 | 25,173 | |
| Kootenai County | 16% | 84% | 1,722 | 181,996 | |
| Latah County | 7% | 87% | 1,623 | 41,049 | |
| Lemhi County | 4% | 81% | 138 | 8,249 | |
| Madison County | 1% | > 90% | 6,167 | 54,618 | |
| Minidoka County | 4% | 63% | 268 | 22,208 | |
| Nez Perce County | 8% | 73% | 605 | 42,697 | |
| Owyhee County | 9% | 65% | 139 | 12,503 | |
| Payette County | 10% | 74% | 297 | 26,771 | |
| Power County | 4% | 66% | 166 | 8,133 | |
| Shoshone County | 16% | 72% | 118 | 13,785 | |
| Teton County | 21% | 87% | 116 | 12,425 | |
| Twin Falls County | 11% | 68% | 1,297 | 93,734 | |
| Washington County | 6% | 77% | 170 | 11,142 |
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About this information
The voter data shown on this page comes from a commercial source that compiles official state records and was last updated on Jul 14, 2026. Population estimates come from the American Community Survey. To learn more, read our research model.
These pages are offered for guidance only and are not intended as legal advice. Please consult state election officials or an attorney if you have questions about any particular situation. We hope you find this useful. To cite our resources and original research, please provide links and/or cite The Civics Center.
If you have a question or noticed a discrepancy, please contact us.
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