Kosewo was formerly part of the German Empire. In the German Empire, the place was called Hasenheide.
The place is now called Kosewo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kossewen | German Empire | Lyck | 1938 |
| Hasenheide | German Empire | Lyck | 1939 |
| Kosewo | Under Polish administration | Ełk | 1945 |
| Kosewo | Poland | Suwałki | 1992 |