Average GPS coordinates for Oasis Postcode location: 29.683, -111.05. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Oasis on map:

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Listing cities & postcodes (1):
>> Sonora, 83420 Oasis, San Luis Rio Colorado, San Luis Rio Colorado (horcasitas), GPS coordinates: 29.6833,-111.05