Average GPS coordinates for San Juan Postcode location: 18.572, -90.794. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Juan on map:

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Listing cities & postcodes (3):
>> Campeche, 24348 San Juan, Candelaria, GPS coordinates: 18.1,-90.9
>> Campeche, 24800 San Juan, Hecelchakan, Hecelchakan, GPS coordinates: 19.0833,-90.4167
>> Campeche, 24902 San Juan, Calkini, Calkini, GPS coordinates: 18.5333,-91.0667