Colorado Citizen Voting-age Population By County in 2021 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen voting-age population for Colorado was 4,194,480 and represented 73.29% of the total Colorado population.
Among all Colorado counties, El Paso had the highest citizen voting-age population (530.42K), followed by Denver (519.92K), and Arapahoe (451.97K).
In terms of percentages, Hinsdale had the highest percentage of its population being citizens of voting-age (88.37%), followed by Dolores (87.12%), and Mineral (86.16%).
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 |
|---|---|---|
| El Paso | 530415 | 73.39 |
| Denver | 519915 | 73.56 |
| Arapahoe | 451965 | 69.36 |
| Jefferson | 451080 | 77.76 |
| Adams | 335685 | 65.19 |
| Larimer | 275890 | 77.79 |
| Douglas | 252020 | 71.61 |
| Boulder | 250710 | 76.27 |
| Weld | 222120 | 68.89 |
| Pueblo | 126670 | 75.64 |
| Mesa | 118370 | 76.52 |
| Broomfield | 53500 | 73.60 |
| La Plata | 44765 | 80.40 |
| Garfield | 40500 | 66.16 |
| Fremont | 40395 | 82.43 |
| Eagle | 38615 | 69.33 |
| Montrose | 31815 | 75.16 |
| Summit | 24740 | 79.70 |
| Delta | 24315 | 78.10 |
| Teller | 20250 | 82.30 |
| Routt | 20065 | 80.58 |
| Elbert | 20030 | 77.35 |
| Montezuma | 19770 | 76.29 |
| Morgan | 19005 | 65.83 |
| Logan | 16715 | 76.80 |
| Chaffee | 16120 | 82.94 |
| Park | 14600 | 83.98 |
| Otero | 14020 | 75.11 |
| Pitkin | 13905 | 79.59 |
| Gunnison | 13785 | 81.81 |
| Grand | 12430 | 79.53 |
| Alamosa | 11780 | 71.94 |
| Las Animas | 11445 | 78.77 |
| Archuleta | 10670 | 80.44 |
| Moffat | 9405 | 71.04 |
| Rio Grande | 8530 | 74.34 |
| Prowers | 8310 | 69.45 |
| Clear Creek | 8060 | 85.52 |
| San Miguel | 6385 | 78.97 |
| Yuma | 6325 | 63.60 |
| Huerfano | 5640 | 83.13 |
| Conejos | 5500 | 72.56 |
| Lake | 5370 | 72.42 |
| Crowley | 5030 | 83.56 |
| Kit Carson | 5030 | 71.15 |
| Saguache | 4985 | 78.26 |
| Bent | 4845 | 82.68 |
| Gilpin | 4765 | 82.01 |
| Rio Blanco | 4700 | 72.36 |
| Lincoln | 4305 | 76.47 |
| Ouray | 4070 | 83.92 |
| Custer | 3945 | 83.58 |
| Washington | 3655 | 75.60 |
| Phillips | 2860 | 63.63 |
| Costilla | 2845 | 80.94 |
| Baca | 2675 | 75.99 |
| Dolores | 1995 | 87.12 |
| Sedgwick | 1765 | 71.75 |
| Cheyenne | 1175 | 69.53 |
| Jackson | 1170 | 85.09 |
| Kiowa | 1030 | 72.79 |
| Hinsdale | 760 | 88.37 |
| Mineral | 685 | 86.16 |
| San Juan | 575 | 82.14 |
