Chojno was formerly part of the German Empire. In the German Empire, the place was called Karlsfeld.
The place is now called Chojno and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Chojno | German Empire | Samter | before the Versailles Treaty |
| Chojno | Poland | Szamotuły | after the Versailles Treaty |
| Karlsfeld | German Empire | Samter | 1939 |
| Chojno | Poland | Szamotuły | 1945 |
| Chojno | Poland | Piła | 1992 |