Bailey is an unincorporated community and U.S. Post Office in northeastern Park County, Colorado, United States.

Bailey is located in the mountains of Park County CO, approximately 30 miles (48 km) southwest of Denver along U.S. Highway 285.

Bailey Day street festival is an annual summer event in the city, featuring bands, vendors and family activities.

Tomahawk Ranch, a residential camp operated by the Girl Scouts of Colorado, is located near Bailey.

The Speech and Debate team holds the record for the most individual State Champions at the Festival Level.