Average GPS coordinates for Quartas Postcode location: 41.242, -8.372. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Quartas on map:

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Listing cities & postcodes (3):
>> Porto, 4600-704 Quartas, Corvo, Salselas, GPS coordinates: 41.2389,-8.45
>> Porto, 4640-230 Quartas, Santa Cruz das Flores, Mazouco, GPS coordinates: 41.1778,-8
>> Porto, 4640-580 Quartas, Santa Cruz das Flores, Lombo, GPS coordinates: 41.3083,-8.6667