Average GPS coordinates for San Carlos Postcode location: 24.583, -98.933. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Carlos on map:

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Listing cities & postcodes (1):
>> Tamaulipas, 87730 San Carlos, San Carlos, GPS coordinates: 24.5833,-98.9333