Average GPS coordinates for San Diego Postcode location: 21, -89.117. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Diego on map:

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Listing cities & postcodes (1):
>> Yucatan, 97500 San Diego, Dzidzantun, GPS coordinates: 21,-89.1167