Idledale is a census-designated place, Unincorporated community, and a U.S. Post Office in Jefferson County, Colorado, United States. The Idledale Post Office has the ZIP Code 80453.
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 at 39°39′57″N 105°14′39″W (39.665971,-105.244045).