Average GPS coordinates for Coval Postcode location: 41.244, -8.169. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Coval on map:

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Listing cities & postcodes (3):
>> Porto, 4585-745 Coval, São Vicente, Murçós, GPS coordinates: 41.2833,-8.325
>> Porto, 4600-520 Coval, Corvo, Constantim, GPS coordinates: 41.25,-8.1
>> Porto, 4600-611 Coval, Corvo, Espadanedo, GPS coordinates: 41.2,-8.0833