Koło pronounced[ˈkɔwɔ] (German:Wartbrücken (1940-41), Warthbrücken (1941-45)) is a town on the Warta River in central Poland with 23,101 inhabitants (2006). It is situated in the Greater Poland Voivodship (since 1999), having previously been in Konin Voivodship (1975–1998), and it is the capital of Koło County.