Average GPS coordinates for San Luis Postcode location: 30.89, -112.705. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Luis on map:

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Listing cities & postcodes (2):
>> Sonora, 83160 San Luis, Hermosillo, Hermosillo, GPS coordinates: 29.3167,-110.6333
>> Sonora, 83503 San Luis, San Luis Rio Colorado, GPS coordinates: 32.4631,-114.7767