Denver is the capital city, which houses a population of 4,753,377, according to 2006 census. The state is divided in 64 counties for administrative purposes, two of them being the city and county of Denver, the two jurisdictions having consolidated government.
Some of the other major counties in the state are:
Adams County
The county seat is Brighton. The county is spread over an area of 3,063 square miles and has a total population of 414,338 people.
Alamosa County Created in 1913, Almosa has its county seat at Alamosa City. The county is spread over an area of 1,873 square miles and houses a population of 15,225.
Baca County The county seat of Baca County is Springfield City. It is spread over a total area of 6,626 square miles and houses a total population of 4,017.
Boulder County It has county seat at Boulder City. The county is spread over an area of 1,918 square miles It holds a total population of 282,034.
Broomfield County The county seat at Broomfield City is responsible for the administration of the county. It is spread over an area of 87 square miles It houses a total population of 45,116.
| County Name | Population | Area (sq. mi.) |
|---|
| Adams County | 363857 | 1191.93 |
| Alamosa County | 14966 | 722.74 |
| Arapahoe County | 487967 | 803.14 |
| Archuleta County | 9898 | 1350.22 |
| Baca County | 4517 | 2555.72 |
| Bent County | 5998 | 1513.9 |
| Boulder County | 291288 | 742.46 |
| Chaffee County | 16242 | 1013.45 |
| Cheyenne County | 2231 | 1781.35 |
| Clear Creek County | 9322 | 395.45 |
| Conejos County | 8400 | 1287.22 |
| Costilla County | 3663 | 1227.1 |
| Crowley County | 5518 | 788.99 |
| Custer County | 3503 | 738.89 |
| Delta County | 27834 | 1142.11 |
| Denver County | 554636 | 153.35 |
| Dolores County | 1844 | 1066.97 |
| Douglas County | 175766 | 840.11 |
| Eagle County | 41659 | 1687.88 |
| Elbert County | 19872 | 1850.78 |
| El Paso County | 516929 | 2126.45 |
| Fremont County | 46145 | 1532.93 |
| Garfield County | 43791 | 2947.06 |
| Gilpin County | 4757 | 149.87 |
| Grand County | 12442 | 1846.67 |
| Gunnison County | 13956 | 3238.81 |
| Hinsdale County | 790 | 1117.68 |
| Huerfano County | 7862 | 1590.87 |
| Jackson County | 1577 | 1613.21 |
| Jefferson County | 527056 | 772.09 |
| Kiowa County | 1622 | 1770.99 |
| Kit Carson County | 8011 | 2160.87 |
| County Name | Population | Area (sq. mi.) |
|---|
| Lake County | 7812 | 376.89 |
| La Plata County | 43941 | 1692.15 |
| Larimer County | 251494 | 2601.3 |
| Las Animas County | 15207 | 4772.63 |
| Lincoln County | 6087 | 2586.09 |
| Logan County | 20504 | 1838.52 |
| Mesa County | 116255 | 3327.75 |
| Mineral County | 831 | 875.72 |
| Moffat County | 13184 | 4742.25 |
| Montezuma County | 23830 | 2036.63 |
| Montrose County | 33432 | 2240.61 |
| Morgan County | 27171 | 1285.36 |
| Otero County | 20311 | 1262.86 |
| Ouray County | 3742 | 540.47 |
| Park County | 14523 | 2200.69 |
| Phillips County | 4480 | 687.62 |
| Pitkin County | 14872 | 970.42 |
| Prowers County | 14483 | 1640.38 |
| Pueblo County | 141472 | 2388.69 |
| Rio Blanco County | 5986 | 3220.97 |
| Rio Grande County | 12413 | 911.6 |
| Routt County | 19690 | 2361.59 |
| Saguache County | 5917 | 3168.44 |
| San Juan County | 558 | 387.42 |
| San Miguel County | 6594 | 1286.5 |
| Sedgwick County | 2747 | 548.24 |
| Summit County | 23548 | 608.16 |
| Teller County | 20555 | 557.06 |
| Washington County | 4926 | 2520.98 |
| Weld County | 180936 | 3992.45 |
| Yuma County | 9841 | 2365.79 |
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