Oldsum

Oldsum Olersem (North Frisian)
Municipality
The windmill is Oldsum's landmark
Location of Oldsum Olersem (North Frisian) within Nordfriesland district
Location of Oldsum Olersem (North Frisian)
Oldsum Olersem (North Frisian) Location within Germany Oldsum Olersem (North Frisian) Location within Schleswig-Holstein
Coordinates: 54°44′N 8°27′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  (2024-12-31)
• Total	552
• Density	41.5/km2 (107/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.