Average GPS coordinates for San Antonio Postcode location: -32.902, -56.929. (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):
>> Canelones, 90002 San Antonio, GPS coordinates: -34.44489, -56.08409
>> Salto, 50009 San Antonio, GPS coordinates: -31.35812, -57.77344