Average GPS coordinates for San Guillermo Postcode location: 25.818, -111.491. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Guillermo on map:

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Listing cities & postcodes (1):
>> Baja California Sur, 23890 San Guillermo, Loreto, GPS coordinates: 25.818,-111.4906