Average GPS coordinates for Calais Postcode location: 45.172, -67.264. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Calais on map:

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Listing cities & postcodes (1):
>> Maine, 04619 Calais, Washington, GPS coordinates: 45.1715,-67.2641