Douglas County is a county located in the U.S. state of Colorado. As of the 2020 Census, the population was 357,978. The county is named in honor of U.S. Senator Stephen A. Douglas. The county seat is Castle Rock.
One of two county buildings for Douglas County in Castle Rock
Second Douglas County office building in Castle Rock
Douglas County Events Center and Fairgrounds in Castle Rock
The "rock castle" of Castle Rock, Colorado
Castle Rock is a home rule town that is the county seat and the most populous municipality of Douglas County, Colorado, United States. The town population was 73,158 at the 2020 census, a 51.68% increase since the 2010 census. Castle Rock is the most populous Colorado town and the 16th most populous Colorado municipality. Castle Rock is a part of the Denver-Aurora-Lakewood, CO Metropolitan Statistical Area and the Front Range urban corridor.
Looking down Wilcox Street in Castle Rock
The Denver and Rio Grande Railway's Castle Rock depot (1917)
The town of Castle Rock is named after this prominent castle tower-shaped butte.
Castle Rock Town Hall (2010)