Płaszewko was formerly part of the German Empire. In the German Empire, the place was called Plassow.
The place is now called Płaszewko and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Deutsch Plassow | German Empire | Stolp | 1937 |
| Plassow | German Empire | Stolp | 1939 |
| Płaszewko | Under Polish administration | Słupsk | 1945 |
| Płaszewko | Poland | Słupsk | 1992 |