Janków Zaleśny was formerly part of the German Empire. In the German Empire, the place was called Hauswalde.
The place is now called Janków Zaleśny and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Jankow zalesny I | German Empire | Adelnau | before the Versailles Treaty |
| Jankow zalesny II | German Empire | Adelnau | before the Versailles Treaty |
| Janków Zaleśny | Poland | Ostrów Wielkopolski | after the Versailles Treaty |
| Hauswalde | German Empire | Ostrowo | 1939 |
| Janków Zaleśny | Poland | Ostrów Wielkopolski | 1945 |
| Janków Zaleśny | Poland | Kalisz | 1992 |