Average GPS coordinates for Mexico Postcode location: 28.931, -110.474. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Mexico on map:

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Listing cities & postcodes (2):
>> Sonora, 83498 Mexico, San Luis Rio Colorado, San Luis Rio Colorado (horcasitas), GPS coordinates: 28.8778,-110.3306
>> Sonora, 85190 Mexico, Cajeme, Ciudad Obregon, GPS coordinates: 28.9833,-110.6167