Average GPS coordinates for San Martin Postcode location: 43.006, -2.177. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Martin on map:

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Listing cities & postcodes (1):
>> Pais Vasco, 20211 San Martin, Guipúzcoa, GPS coordinates: 43.0061,-2.1766