Keystone is a cdp located in Summit County, in the state of Colorado (CO), United States. Nestled in the Mountain division of the West region, it covers an area of 40.6 square miles (105.0 km²) and sits at an elevation of N/A. With a population of approximately 825 residents, Keystone offers a peaceful, rural atmosphere.
The town's population is composed of about 65.09% males and 34.91% females, and it has a population density of 20.32 people per square mile (7.85/km²). Keystone lies at a latitude of 39.6 and a longitude of -105.95, operating in the UTC-7.
Locals reflect a blend of American ancestry, with roots primarily in United States (6.2%), followed by English (7.9%), German (13.5%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 80435.