EASTPORT, a city of Washington county, Maine, occupying Moose Island, in Passamaquoddy bay; a port of entry and the most easterly city of the United States. It is served by the Maine Central railroad and by steamer lines and ferries. The population was 4,494 in 1920; 1930 it was 3,466. It has a large sardine canning industry and important fisheries, especially lobster; is the gateway to a fishing and hunting region ; and is the site of the immense hydroelectric tidal power development. Eastport was settled by fishermen in 1782; became a port of entry in 1790; was incorporated as a town in 1798 and as a city in 1893. Under the Embargo acts of 1807 and 1808 it was a notorious place for smuggling. During the War of 1812 it was taken by the British (July 11, 1814), and after the close of the war was held under martial law until July, 1818, when it was surrendered to the United States in accordance with the decision (November, 1817) of the commissioners appointed under the Treaty of Ghent to adjudicate the claims of the British government to the islands in Passamaquoddy bay.