Average GPS coordinates for San Antonio Postcode location: 22.575, -102.933. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Antonio on map:

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Listing cities & postcodes (2):
>> Zacatecas, 98772 San Antonio, Luis Moya, Luis Moya, GPS coordinates: 23.4167,-102.6
>> Zacatecas, 99700 San Antonio, Tlaltenango de Sanchez Roman, GPS coordinates: 21.7333,-103.2667