EASTPORT, a post-town and sea-port of Maine, in the county of Washington, situated at the most eastern limit of the United States, on Morse Island, in Passamaquoddy Bay. It is a flourishing commercial place, and is very well situated for trade, having ample facilities for communication with the interior, by means of two rivers which flow into the bay. Its harbour is very capacious, and of safe entrance, and is considered as one of the best in the United States. About 1500 tons of shipping belong to it. The exports consist of lumber, and provisions of various kinds. The population in 1820 amounted to 1937. Long. 66. 56. W. Lat. 44. 54. N.