Average GPS coordinates for Onkilahti Postcode location: 63.367, 27.2. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Onkilahti on map:

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Listing cities & postcodes (1):
>> 73140 Onkilahti, GPS coordinates: 63.3667,27.2