 calais  is a city in washington county, maine, united states. as of the 2010 census, it had a population of 3,123. the city has three united states border crossings (also known as a port of entry) over the st. croix river bordering st. stephen, new brunswick, canada. calais has historically been a city of commerce a
Calais,_Maine CanadaaUnited_States_border_crossings CanadaaUnited_States_border_towns Cities_in_Washington_County,_Maine Populated_places_established_in_1779