| Millboro, South Dakota | |
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| — Unincorporated community — | |
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Millboro, South Dakota
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| Coordinates: | |
| Country | United States |
| State | South Dakota |
| County | Tripp |
| Elevation | 2,218 ft (676 m) |
| Time zone | Central (CST) (UTC-6) |
| • Summer (DST) | CDT (UTC-5) |
| Area code(s) | 605 |
| GNIS feature ID | 1256469[1] |
Millboro is an unincorporated community in Tripp County, South Dakota, United States. Millboro is southwest of Colome.
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