Average GPS coordinates for Guayaquil Postcode location: -5.166, -79.701. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Guayaquil on map:

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Listing cities & postcodes (4):
>> Piura, 20340 Guayaquil, Ayabaca, GPS coordinates: -4.99347, -79.96775
>> Piura, 20430 Guayaquil, Huancabamba, GPS coordinates: -5.37255, -79.61379
>> Piura, 20460 Guayaquil, Huancabamba, GPS coordinates: -5.24987, -79.42996
>> Piura, 20350 Guayaquil, Morropón, GPS coordinates: -5.04962, -79.79242