Redstone is an unincorporated town and a census-designated place (CDP) located in and governed by Pitkin County, Colorado, United States. The CDP is a part of the Glenwood Springs, CO Micropolitan Statistical Area. The population of the Redstone CDP was 130 at the United States Census 2010. The Carbondale post office (Zip Code 81623) serves Redstone postal addresses. The village is listed on the National Register of Historic Places as a historic district and includes several properties that are also separately listed on the National Register.