Kotusz was formerly part of the German Empire. In the German Empire, the place was called Treulande.
The place is now called Kotusz and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kotusch | German Empire | Schmiegel | before the Versailles Treaty |
| Kotusz | Poland | Kościan | after the Versailles Treaty |
| Kotusch | German Empire | Kosten (Wartheland) | 1939 |
| Treulande | German Empire | Kosten (Wartheland) | 1939 |
| Kotusz | Poland | Kościan | 1945 |
| Kotusz | Poland | Poznań | 1992 |