Szczecin is the capital and largest city of the West Pomeranian Voivodeship in northwestern Poland. Located near the Baltic Sea an…Szczecin is the capital and largest city of the West Pomeranian Voivodeship in northwestern Poland. Located near the Baltic Sea and the German border, it is a major seaport, the largest city of northwestern Poland, and seventh-largest city of Poland. As of 31 December 2022, the population was 391,566.