Average GPS coordinates for San Martin Postcode location: 26.8, -107.633. (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):
>> Colima, 28863 San Martin, Manzanillo, GPS coordinates: 26.8,-107.6333