Average GPS coordinates for Guayaquil Postcode location: -6.79, -77.005. (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 (3):
>> San Martin, 22100 Guayaquil, Moyobamba, GPS coordinates: -6.14848, -76.92365
>> San Martin, 22845 Guayaquil, Rioja, GPS coordinates: -5.69904, -77.67650
>> San Martin, 22560 Guayaquil, Tocache, GPS coordinates: -8.52234, -76.41607