In Colorado, 71% of 18-year-olds are registered to vote, compared to 89% of voters 45+
Teens have the power to close the gap.
Learn MoreColorado Voter Registration Gap
This maps shows the most recent county-level voter registration rates in Colorado, 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.
Colorado
71% of 18-year-olds are registered to vote as of May 25, 2026.
Learn more about this information.
High school communities can close the gap in Colorado.
Student-led, non-partisan voter registration drives in school ensure every student has the chance to get ready to vote before they graduate.
Colorado County Registration Rates
This table shows the voter registration rates in each Colorado county or county-equivalent as of May 25, 2026. We omit counties with 18-year-old populations below 100.
See our methods for more details.
| 18 vs 45+ | |||||
|---|---|---|---|---|---|
| Adams County | 82% | 81% | 6,735 | 530,225 | |
| Alamosa County | 35% | > 90% | 493 | 16,581 | |
| Arapahoe County | 86% | 84% | 7,273 | 659,844 | |
| Archuleta County | > 90% | > 90% | 114 | 13,900 | |
| Boulder County | 33% | > 90% | 8,558 | 328,961 | |
| Broomfield County | > 90% | > 90% | 784 | 76,304 | |
| Crowley County | 27% | 56% | 130 | 5,647 | |
| Delta County | > 90% | > 90% | 303 | 31,598 | |
| Denver County | 69% | 80% | 7,016 | 718,877 | |
| Douglas County | > 90% | > 90% | 4,460 | 377,150 | |
| Eagle County | 60% | 84% | 778 | 55,135 | |
| Elbert County | > 90% | > 90% | 279 | 27,874 | |
| El Paso County | 73% | > 90% | 10,059 | 742,999 | |
| Fremont County | 80% | 82% | 365 | 49,634 | |
| Garfield County | 82% | 83% | 809 | 62,479 | |
| Gunnison County | 46% | > 90% | 313 | 17,241 | |
| Huerfano County | 34% | 88% | 151 | 6,972 | |
| Jefferson County | 71% | > 90% | 6,308 | 579,377 | |
| Lake County | 44% | > 90% | 135 | 7,380 | |
| La Plata County | 60% | > 90% | 894 | 56,331 | |
| Larimer County | 43% | > 90% | 7,302 | 367,368 | |
| Las Animas County | 60% | > 90% | 191 | 14,413 | |
| Logan County | 40% | 82% | 339 | 20,892 | |
| Mesa County | 64% | > 90% | 2,254 | 158,601 | |
| Moffat County | > 90% | 90% | 134 | 13,207 | |
| Montezuma County | > 90% | > 90% | 254 | 26,412 | |
| Montrose County | > 90% | 88% | 435 | 43,807 | |
| Morgan County | > 90% | 81% | 296 | 29,520 | |
| Otero County | 71% | 89% | 267 | 18,321 | |
| Prowers County | 46% | 81% | 190 | 11,910 | |
| Pueblo County | 86% | 89% | 1,914 | 169,356 | |
| Routt County | 88% | > 90% | 247 | 25,084 | |
| Summit County | > 90% | 89% | 189 | 31,017 | |
| Teller County | > 90% | 88% | 140 | 24,825 | |
| Weld County | 81% | > 90% | 4,807 | 350,396 |
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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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