Oldsum Olersem (North Frisian) | |
|---|---|
 The windmill is Oldsum's landmark | |
 | |
  Oldsum Olersem (North Frisian)  Oldsum Olersem (North Frisian) | |
| Coordinates: 54°44′N 8°27′E / 54.733°N 8.450°E | |
| Country | Germany |
| State | Schleswig-Holstein |
| District | Nordfriesland |
| Municipal assoc. | Föhr-Amrum |
| Government | |
| • Mayor | Hark Riewerts |
| Area | |
| • Total | 13.3 km2 (5.1 sq mi) |
| Elevation | 4 m (13 ft) |
| Population (2022-12-31)[1] | |
| • Total | 525 |
| • Density | 39/km2 (100/sq mi) |
| Time zone | UTC+01:00 (CET) |
| • Summer (DST) | UTC+02:00 (CEST) |
| Postal codes | 25938 |
| Dialling codes | 04683 |
| Vehicle registration | NF |
| Website | www.oldsum-auf-foehr.de |
Oldsum (Fering: Olersem) is a municipality on the island of Föhr, in the district of Nordfriesland, in Schleswig-Holstein, Germany.