Idledale is an unincorporated town, a post office, and a census-designated place (CDP) located in and governed by Jefferson County, Colorado, United States. The CDP is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. The Idledale post office has the ZIP code 80453. At the United States Census 2020, the population of the Idledale CDP was 214.
Originally called "Starbuck Heights", the town was almost washed out by a storm in 1933. When it was rebuilt, the town became known as Idledale.
Idledale is located on the north side of Bear Creek. Colorado State Highway 74 passes through the community as it traverses Bear Creek Canyon; to the east, the highway is known as Bear Creek Canyon Scenic Mountain Drive and leads downstream to Morrison; to the west the highway leads up the canyon the same distance to Kittredge.
The Idledale CDP has an area of , all land.
The United States Census Bureau initially defined the for the
Idledale is served by the Jefferson County Public Schools.