Colorado Citizen Voting-age Population By County in 2017 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2017, the citizen voting-age population for Colorado was 3,893,360 and represented 71.61% of the total Colorado population.
Among all Colorado counties, El Paso had the highest citizen voting-age population (486.51K), followed by Denver (475.99K), and Jefferson (430.87K).
In terms of percentages, Mineral had the highest percentage of its population being citizens of voting-age (89.82%), followed by Custer (83.91%), and Ouray (83.89%).
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 | 486505 | 72.09 |
| Denver | 475990 | 70.16 |
| Jefferson | 430865 | 76.39 |
| Arapahoe | 426765 | 68.11 |
| Adams | 306415 | 62.81 |
| Larimer | 254900 | 77.02 |
| Boulder | 235890 | 74.47 |
| Douglas | 222455 | 69.31 |
| Weld | 193935 | 67.87 |
| Pueblo | 122130 | 74.76 |
| Mesa | 113270 | 76.12 |
| Broomfield | 46150 | 71.79 |
| La Plata | 42975 | 78.90 |
| Fremont | 38395 | 82.39 |
| Garfield | 36805 | 63.52 |
| Eagle | 34725 | 64.64 |
| Montrose | 30265 | 73.98 |
| Delta | 23370 | 77.35 |
| Summit | 23165 | 77.94 |
| Montezuma | 19680 | 76.37 |
| Teller | 19160 | 80.61 |
| Routt | 18985 | 77.94 |
| Elbert | 18800 | 76.56 |
| Morgan | 18095 | 64.34 |
| Logan | 16575 | 75.74 |
| Chaffee | 15685 | 83.34 |
| Park | 13785 | 81.57 |
| Pitkin | 13550 | 76.36 |
| Otero | 13235 | 72.22 |
| Gunnison | 13020 | 80.30 |
| Grand | 11575 | 78.24 |
| Alamosa | 11255 | 68.86 |
| Las Animas | 11150 | 78.80 |
| Archuleta | 9990 | 79.35 |
| Moffat | 9340 | 71.54 |
| Rio Grande | 8250 | 72.18 |
| Prowers | 8080 | 66.86 |
| Clear Creek | 7525 | 81.31 |
| Yuma | 6730 | 66.57 |
| San Miguel | 6015 | 77.07 |
| Conejos | 5755 | 70.66 |
| Lake | 5615 | 75.07 |
| Kit Carson | 5475 | 69.79 |
| Huerfano | 5420 | 83.39 |
| Rio Blanco | 4865 | 74.22 |
| Gilpin | 4675 | 80.67 |
| Bent | 4660 | 80.28 |
| Crowley | 4505 | 81.69 |
| Saguache | 4480 | 70.66 |
| Lincoln | 4225 | 76.54 |
| Ouray | 3905 | 83.89 |
| Custer | 3780 | 83.91 |
| Washington | 3625 | 75.36 |
| Phillips | 2980 | 68.90 |
| Costilla | 2810 | 77.41 |
| Baca | 2725 | 76.12 |
| Sedgwick | 1795 | 76.22 |
| Cheyenne | 1360 | 64.00 |
| Dolores | 1360 | 78.39 |
| Jackson | 1000 | 72.99 |
| Kiowa | 990 | 72.26 |
| Mineral | 750 | 89.82 |
| Hinsdale | 670 | 81.71 |
| San Juan | 475 | 83.33 |
