Average GPS coordinates for Williamsville Postcode location: 42.936, -72.661. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Williamsville on map:

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Listing cities & postcodes (1):
>> Vermont, 05362 Williamsville, Windham, GPS coordinates: 42.9364,-72.6611