Historic Counties
The sortable table below lists all the historic counties of the Territory of New Mexico, the Territory of Utah, the Territory of Kansas, and the extralegal Territory of Jefferson that previously existed within the boundaries of the present State of Colorado, as well as the three defunct counties of the Territory of Colorado and the three defunct counties of the State of Colorado. The table includes the following information:
- The official name of the county,
- The territory or state,
- The date the county was created,
- The date the county was abolished or excluded from the new Territory of Colorado, and
- Historical notes.
| County | Territory or State | Created | Superseded | History |
|---|---|---|---|---|
| Taos County | Territory of New Mexico | 185201091852-01-09 | 186102281861-02-28 | Originally one of the seven partidos of the Spanish, and later Mexican, province of Nuevo México. One of the nine original counties created by the Territory of New Mexico in 1852. Excluded from the new Territory of Colorado in 1861. |
| Great Salt Lake County | Territory of Utah | 185203031852-03-03 | 186102281861-02-28 | Created in 1852, and excluded from the new Territory of Colorado in 1861. |
| Green River County | Territory of Utah | 185203031852-03-03 | 186102281861-02-28 | Created in 1852, but never organized. Dissolved in 1857, but recreated in 1859. Excluded from the new Territory of Colorado in 1861, and the Territory of Wyoming in 1868. Finally dissolved in 1872. |
| Iron County | Territory of Utah | 185203031852-03-03 | 186102281861-02-28 | Created in 1852, and excluded from the new Territory of Colorado in 1861. |
| Sanpete County | Territory of Utah | 185203031852-03-03 | 186102281861-02-28 | Created in 1852, and excluded from the new Territory of Colorado in 1861. |
| Utah County | Territory of Utah | 185203031852-03-03 | 186102281861-02-28 | Created in 1852, and excluded from the new Territory of Colorado in 1861. |
| Washington County | Territory of Utah | 185203031852-03-03 | 186102281861-02-28 | Created in 1852, and excluded from the new Territory of Colorado in 1861. |
| Arapahoe County | Territory of Kansas | 185508251855-08-25 | 186101291861-01-29 | Created in 1855, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861. |
| Beaver County | Territory of Utah | 185601051856-01-05 | 186102281861-02-28 | Split from Iron and Millard counties in 1856. Excluded from the new Territory of Colorado in 1861. |
| Broderick County | Territory of Kansas | 185902071859-02-07 | 186101291861-01-29 | Split from Arapahoe County in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861. |
| El Paso County | Territory of Kansas | 185902071859-02-07 | 186101291861-01-29 | Split from Arapahoe County in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861. |
| Fremont County | Territory of Kansas | 185902071859-02-07 | 186101291861-01-29 | Split from Arapahoe County in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861. |
| Montana County | Territory of Kansas | 185902071859-02-07 | 186101291861-01-29 | Split from Arapahoe County in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861. |
| Oro County | Territory of Kansas | 185902071859-02-07 | 186101291861-01-29 | Split from Arapahoe County in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861. |
| Peketon County | Territory of Kansas | 185902071859-02-07 | 186101291861-01-29 | Created in 1859, but never organized. Reverted to unorganized territory when Kansas joined the Union in 1861. |
| Arrappahoe County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| Cheyenne County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| El Paso County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| Fountain County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| Heele County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| Jackson County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| Jefferson County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| Mountain County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| North County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| Park County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| Saint Vrain CountySt. Vrain County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| Saratoga County | Territory of Jefferson | 185911281859-11-28 | 186102281861-02-28 | One of the 12 counties created by the extralegal Territory of Jefferson in 1859. |
| Mora County | Territory of New Mexico | 186002011860-02-01 | 186102281861-02-28 | Split from Taos County and San Miguel County in 1860. Excluded from the new Territory of Colorado in 1861. |
| Guadalupe County | Territory of Colorado | 186111011861-11-01 | 186111071861-11-07 | One of the 17 original counties created by the Territory of Colorado in 1861. The county was renamed Conejos County after only six days. |
| Greenwood County | Territory of Colorado | 187002111870-02-11 | 187402061874-02-06 | Created from former Cheyenne and Arapaho tribal land and the eastern portion of Huerfano County in 1870. The county was abolished in 1874 and its territory split between Elbert County and Bent County. |
| Platte County | Territory of Colorado | 187202091872-02-09 | 187402091874-02-09 | Created from the eastern portion of Weld County in 1872. The county was abolished in 1874 after organizers failed to secure voter approval. The territory of the county was returned to Weld County. |
| Carbonate County | State of Colorado | 187902081879-02-08 | 187902101879-02-10 | Lake County was renamed Carbonate County in 1879. Only two days later, Carbonate County was split into the new Chaffee County and the renamed Lake County. |
| Uncompaghre County | State of Colorado | 188302271883-02-27 | 188303021883-03-02 | Ouray County was renamed Uncompaghre County for only four days in 1883. |
| South Arapahoe County | State of Colorado | 190211151902-11-15 | 190304111903-04-11 | One of three counties created from Arapahoe County in 1902. The name was changed back to Arapahoe County after five months. |
No organized counties of the District of Louisiana, the Territory of Missouri, the extralegal State of Deseret, or the Territory of Nebraska existed within the present boundaries of the state of Colorado.
Read more about this topic: Colorado Counties
Famous quotes containing the word historic:
“The first farmer was the first man, and all historic nobility rests on possession and use of land.”
—Ralph Waldo Emerson (1803–1882)