Average GPS coordinates for San Luis Postcode location: 21.133, -88.95. (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 (1):
>> Yucatan, 97140 San Luis, Merida, Merida, GPS coordinates: 21.1333,-88.95