Average GPS coordinates for San Marco Postcode location: 43.112, 12.389. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Marco on map:

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Listing cities & postcodes (1):
>> Umbria, 06131 San Marco, Perugia, GPS coordinates: 43.1122,12.3888