The City of Castle Pines is a home rule municipality located in Douglas County, Colorado, United States.

[5] Castle Pines is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area and the Front Range Urban Corridor.

The "City of Castle Pines North" was approved by popular vote on November 6, 2007, and officially incorporated with the first election of municipal officers on February 12, 2008.

[3][4] At the time of incorporation, Castle Pines was Douglas County's first new city since 1995, and Colorado's 271st municipality.

[9] Happy Canyon Creek runs north-northeast through the western part of the city, and Newlin Gulch and its tributary, South Newlin Gulch, run north-northeast and north, respectively, through the eastern part of the city.

The three industries employing the largest percentages of the working civilian labor force were: educational services, health care, and social assistance (17.1%); professional, scientific, and management, and administrative and waste management services (16.7%); and finance and insurance, and real estate and rental and leasing (14.5%).

The City receives a portion of the revenue collected through property taxes, but these dollars are dedicated to fund law enforcement.

[17] Castle Pines is home to 5 parks and 14 miles of trails that are 8-feet wide and paved to accommodate a variety of recreational activities.

Walking, running and bicycling is permitted on trails, however horseback riding and the use of motorized vehicles is prohibited.