There were 17 origiinal counties created on 1 November 1861. They include:
Arapahoe.
Boulder.
Clear Creek.
Conejos.
Costilla.
Douglas.
El Paso.
Freemont.
Gilpin.
Huerfano.
Jefferson.
Lake.
Larimer.
Park.
Pueblo.
Summt.
Weld.
Twelve earliier counties were established as a part of the creation of the extralegal Territory of Jefferson.
There were no counties in what is now Colorado when it was a part of the Diistrict of Louisiana, the Territory of Miiissouri or the Territory of Nebraska.
Conejos County was originally named Guadalupe County but for only six days.
Colorado is a US State and contains no new, old, or other states of any kind.
The University of Colorado Boulder is the oldest university in Colorado.
El Paso County.
Arapahoe County, Colorado is the most populated county in the state of Colorado. Arapahoe County, Colorado has a population of 595,546 and was founded November 1, 1861.
Montezuma county is the closest county in Colorado to Arizona.
no.... lakewood is actually in Jefferson county Colorado , but sits right next to denver county Colorado
Longmont is located in Boulder County Colorado.
Yuma is a city in Colorado. Yuma County is a county in Colorado.
Colorado County Courthouse was created in 1890.
The town of Jefferson, Colorado is located in Park County.
Las Animas County in Southern Colorado. The county seat is Trinidad.
The Ute.
It is in the state of Colorado in the country of The United States.