Average GPS coordinates for San Martin Postcode location: 20.367, -98.65. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Martin on map:

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Listing cities & postcodes (2):
>> Hidalgo, 42092 San Martin, Pachuca de Soto, Pachuca de Soto, GPS coordinates: 20.3667,-98.65
>> Hidalgo, 43320 San Martin, Atotonilco El Grande, GPS coordinates: 20.3667,-98.65