Wisła is a town in Cieszyn County, Silesian Voivodeship, southern Poland, with a population of about 11,132, near the border with the Czech Re…Wisła is a town in Cieszyn County, Silesian Voivodeship, southern Poland, with a population of about 11,132, near the border with the Czech Republic. It is situated in the Silesian Beskids mountain range in the historical region of Cieszyn Silesia and ethnic region of the Silesian Gorals. Wisła is the Polish name for the Vistula River, which has its source in the mountains near the town.