List of counties in Colorado

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Image:Map of Colorado counties, labelled.svg

List of 64 counties in the U.S. state of Colorado:

State Abbr. FIPS State Code State
CO 08 Colorado
FIPS County Code County Name
001 Adams County — formed in 1902 from part of Arapahoe county.
003 Alamosa County — formed in 1913 from parts of Conejos and Costilla counties.
005 Arapahoe County — one of the original 17 counties, the first to be incorporated.
State Abbr. FIPS State Code State
CO 08 Colorado
FIPS County Code County Name
007 Archuleta County — formed in 1885 from part of Conejos county.
009 Baca County — formed in 1889 from part of Las Animas county.
011 Bent County — formed in 1874 from part of Greenwood county.
013 Boulder County — one of the original 17 counties.
014 Broomfield County — formed in 2001 from parts of Adams, Boulder, Jefferson and Weld counties.
015 Chaffee County — formed in 1879 from part of Lake county.
017 Cheyenne County — formed in 1889 from parts of Bent and Elbert counties.
019Clear Creek County — one of the original 17 counties.
021Conejos County — one of the original 17 counties. Originally also known as Guadalupe county
023Costilla County — one of the original 17 counties.
025Crowley County — formed in 1911 from part of Otero county.
027 Custer County — formed in 1877 from part of Fremont county.
029 Delta County — formed in 1883 from part of Gunnison county.
031 Denver County — formed in 1902 from part of Arapahoe county.
033 Dolores County — formed in 1881 from part of San Juan county.
035 Douglas County — one of the original 17 counties.
037 Eagle County — formed in 1883 from part of Summit county.
039 El Paso County — one of the original 17 counties.
041 Elbert County — formed in 1874 from parts of Douglas and Greenwood counties.
043 Fremont County — one of the original 17 counties.
045 Garfield County — formed in 1883 from part of Summit county.
047 Gilpin County — one of the original 17 counties.
049 Grand County — formed in 1874 from part of Summit county.
051 Gunnison County — formed in 1877 from part of Lake county.
053 Hinsdale County — formed in 1874 from parts of Conejos and Lake counties.
055 Huerfano County — one of the original 17 counties.
057 Jackson County — formed in 1909 from part of Larimer county.
059 Jefferson County — one of the original 17 counties.
061 Kiowa County — formed in 1889 from part of Bent county.
063 Kit Carson County — formed in 1889 from part of Elbert county.
065 Lake County — one of the original 17 counties.
067 La Plata County — formed in 1874 from parts of Conejos and Lake counties.
069 Larimer County — one of the original 17 counties.
071 Las Animas County — formed in 1866 from part of Huerfano county.
073 Lincoln County — formed in 1889 from parts of Bent and Elbert counties.
075 Logan County — formed in 1887 from part of Weld county.
077 Mesa County — formed in 1883 from part of Gunnison county.
079 Mineral County — formed in 1893 from parts of Hindsdale and Rio Grande counties.
081 Moffat County — formed in 1911 from part of Routt county.
083 Montezuma County — formed in 1889 from part of La Plata county.
085 Montrose County — formed in 1883 from part of Gunnison county.
087 Morgan County — formed in 1889 from part of Weld county.
089 Otero County — formed in 1889 from part of Bent county.
091 Ouray County — formed in 1877 from parts of Lake and San Juan counties.
093 Park County — one of the original 17 counties.
095 Phillips County — formed in 1889 from part of Logan county.
097 Pitkin County — formed in 1881 from part of Gunnison county.
099 Prowers County — formed in 1889 from part of Bent county.
101 Pueblo County — one of the original 17 counties.
103 Rio Blanco County — formed in 1889 from part of Garfield county.
105 Rio Grande County — formed in 1874 from parts of Conejos and Costilla counties.
107 Routt County — formed in 1877 from part of Grand county.
109 Saguache County — formed in 1866 from parts of Costilla and Lake counties.
111 San Juan County — formed in 1876 from part of Lake county.
113 San Miguel County - formed in 1883 from part of Ouray county.
115 Sedgwick County - formed in 1889 from part of Logan county.
117 Summit County - one of the original 17 counties.
119 Teller County - formed in 1899 from part of El Paso county.
121 Washington County - formed in 1887 from part of Weld county.
123 Weld County - one of the original 17 counties.
125 Yuma County - formed in 1889 from part of Washington county.

New Counties Planned

  • The City of Aurora, which is currently located in two counties; Arapahoe, and Adams, is scheduled to become a consolidated city-county (joining Denver and Broomfield as the only city-counties in the state) around 2008.

Defunct counties

  • Greenwood County - formed in 1870 from part of Huerfano county and the Arapahoe and Cheyenne Reserve. In 1874 was abolished and Bent and Elbert counties created.
  • Platte County - formed in 1872 from part of Weld county. In 1874 was abolished and its territory returned to Weld county.

Template:U.S. Countiesde:Liste der Countys in Colorado fr:Comtés de l'État du Colorado ja:コロラド州の郡一覧 pt:Lista de condados do Colorado