In Colorado, 70% 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 31 states we currently track, with more states coming soon. 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
70% of 18-year-olds are registered to vote as of Apr 27, 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 Apr 27, 2026. We omit counties with populations below 10,000.
See our methods for more details.
| 18 vs 45+ | |||||
|---|---|---|---|---|---|
| Adams County | 81% | 81% | 6,735 | 530,225 | |
| Alamosa County | 35% | > 90% | 493 | 16,581 | |
| Arapahoe County | 85% | 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 | |
| Chaffee County | > 90% | > 90% | 10 | 20,178 | |
| 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 | 61% | 84% | 778 | 55,135 | |
| Elbert County | > 90% | > 90% | 279 | 27,874 | |
| El Paso County | 72% | > 90% | 10,059 | 742,999 | |
| Fremont County | 76% | 82% | 365 | 49,634 | |
| Garfield County | 81% | 83% | 809 | 62,479 | |
| Grand County | > 90% | 88% | 40 | 15,895 | |
| Gunnison County | 46% | > 90% | 313 | 17,241 | |
| Jefferson County | 72% | > 90% | 6,308 | 579,377 | |
| La Plata County | 60% | > 90% | 894 | 56,331 | |
| Larimer County | 43% | > 90% | 7,302 | 367,368 | |
| Las Animas County | 59% | > 90% | 191 | 14,413 | |
| Logan County | 39% | 82% | 339 | 20,892 | |
| Mesa County | 65% | > 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 | 69% | 89% | 267 | 18,321 | |
| Park County | > 90% | > 90% | 6 | 17,907 | |
| Pitkin County | > 90% | 89% | 20 | 16,985 | |
| Prowers County | 44% | 81% | 190 | 11,910 | |
| Pueblo County | 86% | 89% | 1,914 | 169,356 | |
| Rio Grande County | > 90% | > 90% | 78 | 11,321 | |
| Routt County | 87% | > 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 Jun 9, 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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