Average GPS coordinates for San Juan Postcode location: 29.811, -111.022. (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 (3):
>> Sonora, 83070 San Juan, Hermosillo, Hermosillo, GPS coordinates: 29.1667,-110.7667
>> Sonora, 83300 San Juan, Hermosillo, GPS coordinates: 29.1667,-110.7667
>> Sonora, 83801 San Juan, Tubutama, GPS coordinates: 31.1,-111.5333