Zielonka was formerly part of the German Empire. In the German Empire, the place was called Wolfshals.
The place is now called Zielonka and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Zielonke | German Empire | Bromberg | before the Versailles Treaty |
| Zielonka | Poland | Bydgoszcz | after the Versailles Treaty |
| Wolfshals | German Empire | Bromberg | 1939 |
| Zielonka | Poland | Bydgoszcz | 1945 |
| Zielonka | Poland | Bydgoszcz | 1992 |