Average GPS coordinates for San Martin Postcode location: -13.534, -73.605. (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):
>> Apurimac, 03830 San Martin, Chincheros, GPS coordinates: -13.53361, -73.60528