Eldorado Springs is an unincorporated community, a census-designated place (CDP) and a post office located in and governed by Boulder County, Colorado, United States.

The CDP is a part of the Boulder, CO Metropolitan Statistical Area.

[4] At the 2020 United States census, the population of the Eldorado Springs CDP was 559.

[3] Eldorado Canyon State Park, adjacent and upstream, is famous for its classic North-American climbing routes.

The United States Census Bureau initially defined the Eldorado Springs CDP for the United States Census 2000.