Average GPS coordinates for San Marcos Postcode location: 24.63, -104.031. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Marcos on map:

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Listing cities & postcodes (3):
>> Durango, 34225 San Marcos, Durango, Durango, GPS coordinates: 25.2982,-105
>> Durango, 35863 San Marcos, Cuencame, GPS coordinates: 24.2958,-103.5458
>> Durango, 35899 San Marcos, Santa Clara, GPS coordinates: 24.2958,-103.5458