Average GPS coordinates for San Mateo Postcode location: 29.267, -110.683. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Mateo on map:

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Listing cities & postcodes (1):
>> Sonora, 84090 San Mateo, Nogales, Nogales, GPS coordinates: 29.2667,-110.6833