Average GPS coordinates for San Diego Postcode location: 27.765, -98.25. (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):
>> Texas, 78384 San Diego, Duval, GPS coordinates: 27.7654,-98.2503