Colorado Citizen Voting-age Population By County in 2015 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2015, the citizen voting-age population for Colorado was 3,750,955 and represented 71.06% of the total Colorado population.
Among all Colorado counties, El Paso had the highest citizen voting-age population (468.30K), followed by Denver (449.82K), and Jefferson (418.64K).
In terms of percentages, Mineral had the highest percentage of its population being citizens of voting-age (91.84%), followed by San Juan (87.60%), and Ouray (84.61%).
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 | 468300 | 71.49 |
| Denver | 449815 | 69.24 |
| Jefferson | 418635 | 75.79 |
| Arapahoe | 411355 | 67.62 |
| Adams | 295080 | 62.62 |
| Larimer | 243940 | 76.66 |
| Boulder | 228765 | 73.79 |
| Douglas | 209370 | 68.20 |
| Weld | 184710 | 68.17 |
| Pueblo | 119920 | 74.25 |
| Mesa | 111375 | 75.34 |
| Broomfield | 43010 | 70.86 |
| La Plata | 41860 | 78.71 |
| Fremont | 38085 | 81.36 |
| Garfield | 36130 | 63.30 |
| Eagle | 33035 | 62.83 |
| Montrose | 29750 | 72.89 |
| Delta | 23170 | 76.68 |
| Summit | 21830 | 75.43 |
| Montezuma | 19500 | 75.88 |
| Teller | 18675 | 80.01 |
| Morgan | 18225 | 64.26 |
| Routt | 18035 | 76.40 |
| Elbert | 17860 | 74.87 |
| Logan | 16590 | 75.65 |
| Chaffee | 15185 | 82.93 |
| Otero | 13460 | 72.48 |
| Pitkin | 13235 | 75.98 |
| Park | 13020 | 80.42 |
| Gunnison | 12430 | 79.43 |
| Alamosa | 11390 | 70.01 |
| Las Animas | 11330 | 78.11 |
| Grand | 11250 | 78.07 |
| Archuleta | 9675 | 79.47 |
| Moffat | 9260 | 70.61 |
| Rio Grande | 8480 | 72.20 |
| Prowers | 8085 | 66.08 |
| Clear Creek | 7505 | 82.16 |
| Yuma | 6770 | 66.47 |
| San Miguel | 5905 | 76.94 |
| Conejos | 5810 | 70.42 |
| Kit Carson | 5590 | 70.05 |
| Huerfano | 5420 | 83.39 |
| Lake | 5060 | 68.75 |
| Rio Blanco | 4880 | 72.73 |
| Bent | 4625 | 78.46 |
| Gilpin | 4465 | 79.66 |
| Saguache | 4360 | 69.87 |
| Crowley | 4170 | 75.14 |
| Lincoln | 4100 | 74.82 |
| Ouray | 3875 | 84.61 |
| Washington | 3665 | 76.43 |
| Custer | 3495 | 81.19 |
| Phillips | 3090 | 70.71 |
| Baca | 2860 | 77.30 |
| Costilla | 2730 | 76.26 |
| Sedgwick | 1830 | 77.38 |
| Dolores | 1450 | 77.96 |
| Cheyenne | 1385 | 69.25 |
| Kiowa | 1070 | 73.04 |
| Jackson | 1065 | 79.78 |
| Hinsdale | 735 | 84.00 |
| Mineral | 675 | 91.84 |
| San Juan | 530 | 87.60 |
