Average GPS coordinates for San Luis Postcode location: -7.94, -78.497. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Luis on map:

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Listing cities & postcodes (3):
>> La Libertad, 13180 San Luis, Julcán, GPS coordinates: -8.04661, -78.48787
>> La Libertad, 13130 San Luis, Otuzco, GPS coordinates: -7.96193, -78.58580
>> La Libertad, 13220 San Luis, Otuzco, GPS coordinates: -7.81132, -78.41719