Colorado Citizen Voting-age Population By County in 2020 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2020, the citizen voting-age population for Colorado was 4,153,975 and represented 73.07% of the total Colorado population.
Among all Colorado counties, Denver had the highest citizen voting-age population (524.29K), followed by El Paso (519.87K), and Arapahoe (449.88K).
In terms of percentages, Hinsdale had the highest percentage of its population being citizens of voting-age (85.26%), followed by Mineral (84.80%), and Jackson (84.79%).
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 |
|---|---|---|
| Denver | 524295 | 73.24 |
| El Paso | 519865 | 73.17 |
| Arapahoe | 449875 | 69.21 |
| Jefferson | 449115 | 77.60 |
| Adams | 330700 | 64.86 |
| Larimer | 272395 | 77.71 |
| Boulder | 246490 | 75.92 |
| Douglas | 244525 | 71.03 |
| Weld | 216720 | 68.72 |
| Pueblo | 127085 | 75.91 |
| Mesa | 116800 | 76.36 |
| Broomfield | 51030 | 73.48 |
| La Plata | 45090 | 80.32 |
| Fremont | 39485 | 82.73 |
| Garfield | 38720 | 64.96 |
| Eagle | 37875 | 68.91 |
| Montrose | 31900 | 75.45 |
| Delta | 24070 | 78.25 |
| Summit | 23850 | 77.60 |
| Teller | 20440 | 81.83 |
| Elbert | 20330 | 77.51 |
| Routt | 20320 | 80.27 |
| Montezuma | 20055 | 76.36 |
| Morgan | 18850 | 65.88 |
| Logan | 17620 | 79.08 |
| Chaffee | 16595 | 83.08 |
| Park | 15425 | 84.08 |
| Pitkin | 14055 | 78.17 |
| Gunnison | 13865 | 80.99 |
| Otero | 13520 | 73.94 |
| Grand | 12500 | 80.46 |
| Alamosa | 11495 | 71.15 |
| Las Animas | 11365 | 79.34 |
| Archuleta | 10985 | 80.83 |
| Moffat | 9240 | 70.27 |
| Prowers | 8300 | 68.97 |
| Rio Grande | 8180 | 72.39 |
| Clear Creek | 7890 | 82.75 |
| Yuma | 6505 | 64.95 |
| San Miguel | 6255 | 77.13 |
| Lake | 5990 | 76.35 |
| Conejos | 5940 | 73.06 |
| Huerfano | 5645 | 83.38 |
| Kit Carson | 5110 | 70.53 |
| Saguache | 5035 | 74.81 |
| Gilpin | 4975 | 81.42 |
| Crowley | 4775 | 83.26 |
| Rio Blanco | 4745 | 74.49 |
| Bent | 4680 | 82.47 |
| Lincoln | 4320 | 77.01 |
| Custer | 4170 | 84.41 |
| Ouray | 4125 | 84.36 |
| Washington | 3715 | 76.28 |
| Costilla | 3020 | 79.27 |
| Baca | 2720 | 76.19 |
| Phillips | 2700 | 62.14 |
| Sedgwick | 1635 | 70.93 |
| Dolores | 1600 | 84.43 |
| Cheyenne | 1355 | 67.75 |
| Jackson | 1115 | 84.79 |
| Kiowa | 1050 | 71.67 |
| Mineral | 725 | 84.80 |
| Hinsdale | 665 | 85.26 |
| San Juan | 500 | 77.52 |
