Average GPS coordinates for San Pedro Postcode location: 18.033, -92.317. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Pedro on map:

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Listing cities & postcodes (2):
>> Tabasco, 86472 San Pedro, Cardenas, GPS coordinates: 18.3,-93.5
>> Tabasco, 86960 San Pedro, Balancan, GPS coordinates: 17.7667,-91.1333