Colorado Citizen Population By County in 2016 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2016, the citizen population for Colorado was 5,041,535 and represented 94.07% of the total Colorado population.

Among all Colorado counties, El Paso had the highest citizen population (642.41K), followed by Denver (593.62K), and Arapahoe (565.75K).

In terms of percentages, Hinsdale had the highest percentage of its population being citizens (100.00%), followed by Mineral (100.00%), and San Juan (100.00%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

You can see similar information for other states and by state for the United States.

See this for other years:
Colorado Citizen Population By County in 2016
Colorado Citizen Population By County in 2016
Items per page:
0 of 0
County Citizen Population % of County Population
El Paso 642405 96.58
Denver 593615 89.49
Arapahoe 565750 91.59
Jefferson 540410 96.71
Adams 429035 89.39
Larimer 316065 97.18
Douglas 304115 96.78
Boulder 293880 93.60
Weld 262230 94.31
Pueblo 158395 97.68
Mesa 145160 97.97
Broomfield 59930 95.97
La Plata 52865 97.91
Garfield 50420 87.70
Fremont 46115 98.46
Eagle 45510 86.04
Montrose 39040 95.53
Delta 29425 97.37
Summit 26850 91.73
Morgan 25800 91.20
Montezuma 25655 98.65
Elbert 23630 97.54
Teller 23180 98.76
Routt 22910 95.54
Logan 21130 96.66
Chaffee 18215 98.43
Otero 17660 95.77
Park 16045 97.60
Pitkin 16035 91.39
Gunnison 15635 98.40
Alamosa 15250 93.24
Las Animas 13925 97.24
Grand 13890 95.86
Moffat 12620 96.82
Archuleta 11935 96.60
Prowers 11340 93.56
Rio Grande 11165 96.04
Yuma 9330 91.92
Clear Creek 9030 97.73
Conejos 8045 97.93
Kit Carson 7535 92.17
San Miguel 7345 94.59
Lake 6775 91.55
Rio Blanco 6560 98.50
Huerfano 6485 99.46
Saguache 5745 91.85
Gilpin 5615 98.34
Bent 5555 95.53
Lincoln 5330 96.65
Crowley 5245 94.76
Washington 4740 98.44
Ouray 4580 98.50
Custer 4345 99.31
Phillips 4105 94.48
Baca 3570 97.81
Costilla 3425 95.40
Sedgwick 2295 97.04
Cheyenne 1950 94.20
Dolores 1785 99.72
Kiowa 1455 99.32
Jackson 1245 95.40
Hinsdale 855 100.00
Mineral 795 100.00
San Juan 550 100.00