Average GPS coordinates for San Juan Postcode location: -14.942, -75.168. (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 (2):
>> Ica, 11340 San Juan, Nazca, GPS coordinates: -14.67278, -75.22531
>> Ica, 11421 San Juan, Nazca, GPS coordinates: -15.21194, -75.11028