Average GPS coordinates for San Juan Postcode location: -15.362, -73.378. (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):
>> Arequipa, 04510 San Juan, Caraveli, GPS coordinates: -15.55035, -73.92479
>> Arequipa, 04825 San Juan, La Unión, GPS coordinates: -15.17306, -72.83083