Average GPS coordinates for Eira Postcode location: 40.884, -8.016. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Eira on map:

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Listing cities & postcodes (3):
>> Viseu, 4690-105 Eira, Povoação, Bagueixe, GPS coordinates: 40.8662,-8.0034
>> Viseu, 4690-274 Eira, Povoação, Poiares, GPS coordinates: 40.7944,-8.1444
>> Viseu, 4690-530 Eira, Povoação, Espadanedo, GPS coordinates: 40.9917,-7.9