Włocławek is a city in the Kuyavian–Pomeranian Voivodeship in central Poland along the Vistula River, bordered by the Gostynin-Włocławek Landscape Park. As of December 2021, the population of the city is 106,928. Founded in the 9th century, Włocławek is located in the historical region of Kuyavia, and was its administrative center and main city in the Middle Ages.