Douglas County on the map of Colorado 2025. Cities, roads, borders and directions in Douglas County of Colorado.

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Douglas County is found in Denver suburban area of Colorado. This famous county is named after Stephen Arnold Douglas, (1813-1861), U.S. Senator from Illinois from 1847 to 1861. The population of Douglas County exceeds 369 thousand people. The county, organized in 1861, covers an area of 842 square miles. The county seat of Douglas County is Castle Rock. This map shows the borders of Douglas County as well as neighboring counties, including major highways and natural objecsts as of 2025. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Douglas County.



The borders of Douglas County over the map of Colorado

An image of Douglas County, CO

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