Neudorf was formerly part of the German Empire. In the German Empire, the place was called Plötzenneudorf.
The place is now called Płochocinek * and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Neudorf | German Empire | Schwetz | before the Versailles Treaty |
| Nowawieś pod Płochocinem | Poland | Świecie | after the Versailles Treaty |
| Plötzenneudorf | German Empire | Schwetz (Weichsel) | 1939 |
| Płochocinek * | Poland | Świecie | 1945 |
| Płochocinek * | Poland | Bydgoszcz | 1992 |