Košak is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Marburg/Maribor.
Košak was formerly part of the German Empire. In the German Empire, the place was called Freigraben (Marburg-Freigraben). The place is now called Košaki (Maribor-Košaki) and belongs to Slovenia.