Average GPS coordinates for San Diego Chalma Postcode location: 18.433, -97.35. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Diego Chalma on map:

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Listing cities & postcodes (1):
>> Puebla, 75859 San Diego Chalma, Tehuacan, GPS coordinates: 18.4333,-97.35