COLORADO COUNTIES

 

Counties

County  Created Parent  County Seat

Administrator

Unknown County       
       
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 Alice Allen
Boulder 1861 Original  County Boulder Linda Simpson
Broomfield 2001 Adams, Boulder, Jefferson, Weld    
Chaffee 1879 Lake Salida Gail Meyer Kilgore 
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 1861 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  Katy Hestand
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 Gail Meyer Kilgore 
La Plata 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  Katy Hestand
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 Gail Meyer Kilgore
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  Katy Hestand
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  Jen Baldwin
Teller 1899 El Paso Cripple Creek  Alice Allen
Washington 1887 Weld,  Arapahoe Akron  
Weld 1861 Original  County Greeley  
Yuma 1889 Washington,  Arapahoe Wray  

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