Glendale is an unincorporated community and a census-designated place (CDP) located in and governed by Boulder County, Colorado, United States.

The CDP is a part of the Boulder, CO Metropolitan Statistical Area.

[3] The Jamestown post office (Zip Code 80455) serves the area.

[4] Glendale is located in central Boulder County in the Front Range of the Colorado Rocky Mountains, in the valley of Left Hand Creek.

Lefthand Canyon Drive leads east 7 miles (11 km) to Altona and U.S. Highway 36, and west 9 miles (14 km) to Ward and State Highway 72.