Dobrzyń nad Wisłą is a town in the Kuyavian-Pomeranian Voivodeship, Poland. It lies on the Vistula River in the vicinity of Włocławek. As of …Dobrzyń nad Wisłą is a town in the Kuyavian-Pomeranian Voivodeship, Poland. It lies on the Vistula River in the vicinity of Włocławek. As of December 2021, the town has a population of 2,025. The settlement of Dobrzyń dates back to the Middle Ages. A stronghold existed at the site since 9th century, and later also a castle was erected. It became part of the emerging Polish state in the 10th century. The oldest known mention of Dobrzyń comes from 1065.