St. Ann Highlands, Colorado

St. Ann Highlands 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 St. Ann Highlands CDP was 325 at the United States Census 2020. The Nederland post office (Zip Code 80466) serves the area.

Geography
St. Ann Highlands is located in southern Boulder County, 4 mi northeast of the town of Nederland. It occupies a ridge between the valleys of North Boulder Creek and Middle Boulder Creek. State Highway 119 forms the southern edge of the CDP, connecting Nederland to the west with Boulder 12 mi to the east.

Geography
The St. Ann Highlands CDP has an area of 3.602 km2, all land.

Demographics
The United States Census Bureau initially defined the St. Ann Highlands CDP for the United States Census 2010.