| Keystone | |
|---|---|
| Ghost town | |
| Coordinates: 47°14′25.63″N 118°9′10.72″W / 47.2404528°N 118.1529778°WCoordinates: 47°14′25.63″N 118°9′10.72″W / 47.2404528°N 118.1529778°W | |
| Country | United States |
| State | Washington |
| Founded | ca. 1885 |
| Time zone | PST (UTC-8) |
| • Summer (DST) | PDT (UTC-7) |
Keystone is a ghost town in Adams County, Washington
The community was named after Pennsylvania, the Keystone State, the former home of an early postmaster.