Average GPS coordinates for Sonkakoski Postcode location: 63.733, 27.5. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Sonkakoski on map:

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Listing cities & postcodes (1):
>> 74360 Sonkakoski, GPS coordinates: 63.7333,27.5