Average GPS coordinates for Serro Postcode location: 41.289, -7.788. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Serro on map:

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Listing cities & postcodes (3):
>> Vila Real, 5030-078 Serro, Penalva do Castelo, Cicouro, GPS coordinates: 41.3333,-7.6967
>> Vila Real, 5040-292 Serro, Povoação, Bagueixe, GPS coordinates: 41.1667,-7.8333
>> Vila Real, 5050-367 Serro, Santa Cruz, Cortiços, GPS coordinates: 41.3667,-7.8333