Groß Kosarken-Wehlack was formerly part of the German Empire. In the German Empire, the place was called Köhlershof.
The place is now called Kozarek Średni and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Groß Kosarken-Wehlack | German Empire | Sensburg | 1938 |
| Köhlershof | German Empire | Sensburg | 1939 |
| Kozarek Średni | Under Polish administration | Mrągowo | 1945 |
| Kozarek Średni | Poland | Olsztyn | 1992 |