Mailbox Map › United States › De Smet › Oldham Post Office
Post office · USPS
Oldham Post Office, De Smet
Oldham Post Office.
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| Area | De Smet, South Dakota |
|---|---|
| Coordinates | 44.22794, -97.30848 |
| Time zone | America/Chicago |
Mapped by the OpenStreetMap community, last checked 2026-06-17. Spotted a box that's gone? Fix it on OpenStreetMap and this page follows within a month.