Average GPS coordinates for Gressvik Postcode location: 59.217, 10.9. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Gressvik on map:

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Listing cities & postcodes (3):
>> Ostfold, 1620 Gressvik, Fredrikstad, GPS coordinates: 59.2167,10.9
>> Ostfold, 1621 Gressvik, Fredrikstad, GPS coordinates: 59.2167,10.9
>> Ostfold, 1624 Gressvik, Fredrikstad, GPS coordinates: 59.2167,10.9