Colorado Counties
| County |
Created |
Parent |
County Seat |
County Coordinator |
|
Adams
|
1903 |
Arapahoe |
Brighton |
|
|
Alamosa
|
1913 |
Costilla, Conejos |
Alamosa |
|
| Arapahoe |
1861 |
Original County |
Littleton |
|
|
Archuleta
|
1885 |
Conejos |
Pagosa Springs |
|
|
Baca
|
1889 |
Las Animas |
Springfield |
|
|
Bent
|
1874 |
Greenwood |
Las Animas |
|
|
Boulder
|
1861 |
Original County |
Boulder |
|
|
Broomfield [City & County of ]
|
2001 |
Adams, Boulder, Jefferson, Weld |
Broomfield |
|
|
Chaffee
|
1879 |
Lake |
Salida |
|
|
Cheyenne
|
1889 |
Bent, Elbert |
Cheyenne Wells |
|
| Clear Creek |
1861 |
Original County |
Georgetown |
|
|
Conejos
|
1861 |
Original County |
Conejos |
|
|
Costilla
|
1861 |
Original County |
San Luis |
|
|
Crowley
|
1911 |
Bent, Otero |
Ordway |
|
|
Custer
|
1877 |
Fremont |
Westcliffe |
|
|
Delta
|
1883 |
Gunnison |
Delta |
|
| Denver [City & County of ] |
1901 |
Arapahoe |
Denver |
|
|
Dolores
|
1881 |
Ouray |
Dove Creek |
|
|
Douglas
|
1861 |
Original County |
Castle Rock |
|
|
Eagle
|
1883 |
Summit |
Eagle |
|
|
Elbert
|
1874 |
Douglas, Greenwood |
Kiowa |
|
|
El Paso
|
1874 |
Original County |
Colorado Springs |
|
|
Fremont
|
1859 |
Original County |
Canon City |
|
|
Garfield
|
1883 |
Summit |
Glenwood Springs |
|
| Greenwood |
1870 |
Kit Carson; dissolved 1874; divided between Bent & Elbert Counties |
| Gilpin |
1861 |
Original County |
Central City |
|
|
Grand
|
1874 |
Summit |
Hot Sulphur Springs |
|
|
Gunnison
|
1877 |
Lake |
Gunnison |
|
| Hinsdale |
1874 |
Conejos |
Lake City |
|
|
Huerfano
|
1861 |
Original County |
Walsenburg |
|
|
Jackson
|
1909 |
Grand, Larimer |
Walden |
|
| Jefferson |
1861 |
Original County |
Golden |
|
|
Kiowa
|
1889 |
Cheyenne, Bent |
Eads |
|
|
Kit Carson
|
1889 |
Elbert |
Burlington |
|
|
Lake
|
1861 |
Original County |
Leadville |
|
|
LaPlata
|
1861 |
Original County |
Durango |
|
|
Larimer
|
1861 |
Original County |
Fort Collins |
|
| Las Animas |
1866 |
Huerfano |
Trinidad |
|
|
Lincoln
|
1889 |
Elbert |
Hugo |
|
|
Logan
|
1887 |
Weld |
Sterling |
|
|
Mesa
|
1883 |
Gunnison |
Grand Junction |
|
|
Mineral
|
1892 |
Hinsdale |
Creede |
|
|
Moffat
|
1911 |
Routt |
Craig |
|
|
Montezuma
|
1889 |
La Plata |
Cortez |
|
|
Montrose
|
1883 |
Gunnison |
Montrose |
|
| Morgan |
1889 |
Weld |
Fort Morgan |
|
|
Otero
|
1889 |
Bent |
La Junta |
|
|
Ouray
|
1877 |
Hinsdale, San Juan |
Ouray |
|
|
Park
|
1861 |
Original County |
Fairplay |
|
|
Phillips
|
1889 |
Logan |
Holyoke |
|
|
Pitkin
|
1881 |
Gunnison |
Aspen |
|
| Platte |
1872 |
Weld; dissolved 1874; reverted back to Weld County |
|
Prowers
|
1889 |
Bent |
Lamar |
|
| Pueblo |
1861 |
Original County |
Pueblo |
|
|
Rio Blanco
|
1889 |
Summit |
Meeker |
|
|
Rio Grande
|
1874 |
Conejos, Costilla |
Del Norte |
|
|
Routt
|
1877 |
Grand |
Steamboat Springs |
|
|
Saguache
|
1866 |
Rio Grande |
Saguache |
|
|
San Juan
|
1876 |
La Plata |
Silverton |
|
|
San Miguel
|
1883 |
Ouray |
Telluride |
|
|
Sedgwick
|
1889 |
Logan |
Julesburg |
|
|
Summit
|
1861 |
Original County |
Breckenridge |
|
|
Teller
|
1899 |
El Paso |
Cripple Creek |
|
|
Washington
|
1887 |
Weld, Arapahoe |
Akron |
|
| Weld |
1861 |
Original County |
Greeley |
|
|
Yuma
|
1889 |
Washington, Arapahoe |
Wray |
|
|
Unknown County
|
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. |
. |
|
