Klein-Kostschin was formerly part of the German Empire. In the German Empire, the place was called Kleinkostrzin.
The place is now called Kościerzynek and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Klein-Kostschin | German Empire | Wirsitz | before the Versailles Treaty |
| Kościerzynek | Poland | Wyrzysk | after the Versailles Treaty |
| Kleinkostrzin | German Empire | Wirsitz | 1939 |
| Kościerzynek | Poland | Wyrzysk | 1945 |
| Kościerzynek | Poland | Piła | 1992 |