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. The population of the Glendale CDP was 64 at the United States Census 2020. The Jamestown post office (Zip Code 80455) serves the area.
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 to Altona and U.S. Highway 36, and west to Ward and State Highway 72.
The Glendale CDP has an area of , all land.
The United States Census Bureau initially defined the for the