Castle Rock, CO
The Town of Castle Rock is the county seat of Douglas County, Colorado, United States and is named for the prominent castle tower-shaped butte near the center of town. It is part of Colorado's Front Range Urban Corridor and is located roughly 28 miles (46 km) south of Denver and 37 miles (60 km) north of Colorado Springs. As of the 2010 census, the town had a population of 48,231.
Castle Rock was founded in 1874 when the eastern Douglas County border was redrawn to its present location. Castle Rock was chosen as the county seat because of its central location.
The region in and around Castle Rock was originally home to Native Americans of the Arapahoe and Cheyenne tribes. They occupied the land between the Arkansas and South Platte Rivers.