Average GPS coordinates for Chalaco Postcode location: -5.117, -80.435. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Chalaco on map:

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Listing cities & postcodes (3):
>> Piura, 20351 Chalaco, Morropón, GPS coordinates: -5.04962, -79.79242
>> Piura, 20640 Chalaco, Sechura, GPS coordinates: -5.42678, -80.78861
>> Piura, 20770 Chalaco, Sullana, GPS coordinates: -4.87314, -80.72288