Average GPS coordinates for San Ysidro Postcode location: 32.79, -116.945. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Ysidro on map:

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Listing cities & postcodes (2):
>> California, 92143 San Ysidro, San Diego, GPS coordinates: 33.0169,-116.846
>> California, 92173 San Ysidro, San Diego, GPS coordinates: 32.5626,-117.043