Evergreen is a census-designated place (CDP) and a U.S. Post Office in Jefferson County, Colorado, United States.The population was 9,038 at the 2010 census.
Homesteader Thomas Bergen arrived in 1859, establishing a ranch and stage stop north of present-day downtown Evergreen. Bergen's Ranch was recognized as a settled area at the establishment of Jefferson County, Jefferson Territory. Fellow homesteader Dwight P. Wilmot is credited with naming the area "Evergreen"; his home has been preserved and still functions as a private residence.The town grew on the lumber demand for buildings in Denver and by the 1880s, the town could boast a population of 200 people and six operating sawmills. Improvement of the road from Denver up Bear Creek Canyon in 1911 and electrical service reaching the town in 1917 spurred further growth and the town became a popular summer destination for Denver residents. Resorts like Troutdale-in-the-Pines, Greystone Guest Ranch and the Brook Forest Inn opened and entertained Denverites and celebrities including film stars of the day and Presidents Franklin D. Roosevelt and Theodore Roosevelt, both whom vacationed at Troutdale.