Sępólno Krajeńskie pronounced['sɛmˈpulnɔ kraˈjɛɲskʲɛ] (German:Zempelburg) is a town in Poland, in the Kuyavian-Pomeranian Voivodeship, about 63 kilometres (39 miles) northwest of Bydgoszcz. It is the capital of Sępólno County (powiat sępoleński) and has a population of 9,174 (2004).