Calais is a city in Washington County, Maine, United States. As of the 2010 census, it had a population of 3,123, making Calais the third least-populous city in Maine. The city has three Canada–US border crossings over the St. Croix River connecting to St. Stephen, New Brunswick, Canada. Calais has been a city of commerce and is recognized as the primary shopping center of eastern Washington County and of Charlotte County, New Brunswick. Retail, service,... Show more

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