Evergreen is an unincorporated town, a post office, and a census-designated place located in and governed by Jefferson County, Colorado, U.S. The CDP is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. The Evergreen post office has the ZIP Codes 80439 and 80437. At the 2020 census, the population of the Evergreen CDP was 9,307. The Evergreen Metropolitan District provides services.