Average GPS coordinates for La Sierra Postcode location: 31.317, -116.067. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). La Sierra on map:

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Listing cities & postcodes (2):
>> Baja California, 21477 La Sierra, Tecate, Tecate, GPS coordinates: 31.3167,-116.0667
>> Baja California, 22634 La Sierra, Tijuana, Tijuana, GPS coordinates: 31.3167,-116.0667