Douglas County, Colorado

county in Colorado, United States

Douglas County is a county in the state of Colorado in the United States. As of the 2020 census, 357,978 people lived there.[1] The county seat is Castle Rock.

Douglas County
One of two county buildings for Douglas County in Castle Rock
One of two county buildings for Douglas County in Castle Rock
Flag of Douglas County
Map of Colorado highlighting Douglas County
Location within the U.S. state of Colorado
Map of the United States highlighting Colorado
Colorado's location within the U.S.
Coordinates: 39°21′N 104°56′W / 39.35°N 104.93°W / 39.35; -104.93
Country United States
State Colorado
FoundedNovember 1, 1861
Named forStephen A. Douglas
SeatCastle Rock
Largest communityHighlands Ranch
Area
 • Total843 sq mi (2,180 km2)
 • Land840 sq mi (2,200 km2)
 • Water2.6 sq mi (7 km2)  0.3%
Population
 • Total357,978
 • Density426/sq mi (164/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Websitewww.douglas.co.us

References

change
  1. 1.0 1.1 "QuickFacts: Douglas County, Colorado". United States Census Bureau. Retrieved August 8, 2023.