Average GPS coordinates for São Martinho Postcode location: 40.99, -7.778. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). São Martinho on map:

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Listing cities & postcodes (5):
>> Viseu, 3505-359 São Martinho, Viseu, Soutelo Mourisco, GPS coordinates: 40.85,-7.95
>> Viseu, 3620-442 São Martinho, Ribeira Brava, Grijó, GPS coordinates: 40.9333,-7.6333
>> Viseu, 4690-485 São Martinho, Povoação, Edroso, GPS coordinates: 40.94,-8
>> Viseu, 5110-619 São Martinho, Corvo, Grijó, GPS coordinates: 41.0778,-7.7043
>> Viseu, 5120-014 São Martinho, Tabuaço, Atenor, GPS coordinates: 41.15,-7.6