Keystone is located in Summit County, CO. The population is 1,048, making Keystone the 5th largest city in Summit County.
There are 0 public schools in Keystone with an average Homefacts rating of NA. The total crime rate for Keystone is very low , and there are 0 registered sex offenders residing in the city. Unemployment in Keystone is low and the median home sales price is $0. Detailed and up-to-date Keystone property reports are available for any property address.