Zalesie was formerly part of the German Empire. In the German Empire, the place was called Tannau (Ostpr.).
The place is now called Zalesie and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Salleschen | German Empire | Treuburg | 1938 |
| Tannau (Ostpr.) | German Empire | Treuburg | 1939 |
| Zalesie | Under Polish administration | Olecko | 1945 |
| Zalesie | Poland | Suwałki | 1992 |