Average GPS coordinates for Österskär Postcode location: 59.467, 18.306. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Österskär on map:

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Listing cities & postcodes (2):
>> Stockholm, 18451 Österskär, Österåker, GPS coordinates: 59.4671,18.3062
>> Stockholm, 18452 Österskär, Österåker, GPS coordinates: 59.4671,18.3062