Average GPS coordinates for Stockton Postcode location: 42.318, -79.376. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Stockton on map:

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Listing cities & postcodes (1):
>> New York, 14784 Stockton, Chautauqua, GPS coordinates: 42.3182,-79.3758