Koscierzyna County is a county of Pomeranian Voivodship with capital in Koscierzyna. The Pomeranian Voivodship (in Polish województwo pomorskie) is an administrative region or voivodship in northern Poland within the historic region of Eastern Pomerania. ... Kościerzyna is a town in Kashubia or Eastern Pomerania region, north-western Poland, with some 24,000 inhabitants. ...