Average GPS coordinates for San Luis Postcode location: -5.096, -80.404. (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 (4):
>> Piura, 20560 San Luis, Ayabaca, GPS coordinates: -4.92829, -79.72382
>> Piura, 20310 San Luis, Morropón, GPS coordinates: -5.18222, -79.96889
>> Piura, 20740 San Luis, Paita, GPS coordinates: -4.84657, -81.13450
>> Piura, 20640 San Luis, Sechura, GPS coordinates: -5.42678, -80.78861