Usedom is a Baltic Sea island in Pomerania, divided between Germany and Poland. It is the second largest Pomeranian island after Rügen, and the most populous island in the Baltic Sea.
It lies north of the Szczecin Lagoon estuary of the Oder river. About 80% of the island belongs to the German district of Vorpommern-Greifswald in the state of Mecklenburg-Vorpommern. The eastern part and the largest city on the island, Świnoujście, are part of the Polish West Pomeranian Voivodeship. The island's total area is 445 square kilometres – 373 square kilometres in the German part and 72 square kilometres in the Polish part. Its population is 76,500.
Wikipedia https://en.wikipedia.org/wiki/Usedom
Address 17429, Germany
Coordinates 53°55'59.999" N 14°4'59.999" E
