Average GPS coordinates for San Juan Postcode location: 20.083, -103.725. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Juan on map:

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Listing cities & postcodes (2):
>> Jalisco, 47860 San Juan, Ocotlan, Ocotlan, GPS coordinates: 20.1667,-104.0333
>> Jalisco, 49229 San Juan, Atoyac, GPS coordinates: 20,-103.4167