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

The population of the Westcreek CDP was 120 at the United States Census 2020.

[3] The Sedalia post office (Zip Code 80135) serves the area.

Colorado State Highway 67 passes through the community, leading north down the West Creek/Horse Creek valley 9 miles (14 km) to Deckers and southeast 15 miles (24 km) to Woodland Park.

The Douglas County School District serves Westcreek.