Ruby, Arizona | |
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 Ruby, Arizona in 1990 | |
  Ruby, Arizona Location in the state of Arizona  Ruby, Arizona Ruby, Arizona (the United States) | |
| Coordinates: 31°27′40″N 111°14′15″W / 31.46111°N 111.23750°W | |
| Country | United States |
| State | Arizona |
| County | Santa Cruz |
| Elevation | 4,186 ft (1,276 m) |
| Time zone | UTC-7 (MST (no DST)) |
| Post office opened: | April 11, 1912 |
| Post office closed: | May 31, 1941 |
Ruby is a ghost town in Santa Cruz County, Arizona, United States. It was founded as a mining town in Bear Valley, originally named Montana Camp, so named because the miners were mining at the foot of Montana Peak.