Brook Forest is an unincorporated community and a census-designated place (CDP) located in Jefferson and Clear Creek counties, Colorado, United States.

[4] The CDP is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area.

The Brook Forest, Colorado, post office operated from October 11, 1921, until Feb 15, 1949.

[6] The Evergreen Post Office (ZIP Code 80439) now serves the area.

[2] At the 2020 United States Census, the Brook Forest CDP had an area of 889 acres (3.597 km2), all land.