Płonica was formerly part of the German Empire. In the German Empire, the place was called Platendienst.
The place is now called Płonica and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Platendienst | German Empire | Konitz | before the Versailles Treaty |
| Platendienst | German Empire | Schlochau | after the Versailles Treaty |
| Platendienst | German Empire | Schlochau | 1939 |
| Płonica | Under Polish administration | Człuchów | 1945 |
| Płonica | Poland | Słupsk | 1992 |