Average GPS coordinates for El Arenal Postcode location: 21.683, -100.817. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). El Arenal on map:

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Listing cities & postcodes (1):
>> San Luis Potosi, 78117 El Arenal, San Luis Potosi, San Luis Potosi, GPS coordinates: 21.6833,-100.8167