USEDOM, an island of Germany, in the Prussian province of Pomerania, lying off the Baltic coast, and separated by the Swine from the island of Wollin, which together with it divides the Stettiner Haff from the open sea. It is 31 m. in length. 13 broad and 160 sq. m. in area. The surface is generally flat (only a few sand-hills rising to any height) and is diversified by moor, fen, lakes and forest. Agriculture, cattle-rearing, fishing and other maritime pursuits are the chief occupations of the inhabitants. Swinemünde and Usedom (pop. 1700) are the chief towns, and Heringsdorf, Ahlbeck and Zinnowitz are frequented watering-places. Pop. (1900) 33,000.
See Gadebusch, Chronik der Insel Usedom (Anklam, 1863), and C. Müller, Die Seebäder der Inseln Usedom und Wollin (6th ed., Berlin, 1896).