Evergreen is an unincorporated town, a U.S. Census Bureau Census Designated Place, and a U.S. Post Office located in Jefferson County, Colorado, United States. Evergreen is roughly 30 miles west of the City and County of Denver. The CDP population was 9,216 at the U.S. Census 2000. The Evergreen Post Office has the ZIP Codes 80437 and 80439. Evergreen apartments for rent comparison page shows most up to date rent information on Evergreen apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.