Jaszczerek was formerly part of the German Empire. In the German Empire, the place was called Hintereschenbruch.
The place is now called Jaszczerek and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Jascherrek | German Empire | Schwetz | before the Versailles Treaty |
| Jaszczerek | Poland | Świecie | after the Versailles Treaty |
| Hintereschenbruch | German Empire | Schwetz (Weichsel) | 1939 |
| Jaszczerek | Poland | Starogard Gdański | 1945 |
| Jaszczerek | Poland | Gdańsk | 1992 |