Olszówka was formerly part of the German Empire. In the German Empire, the place was called Ellerbruch.
The place is now called Olszówka and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ellerbruch | German Empire | Stuhm | before the Versailles Treaty |
| Ellerbruch | German Empire | Stuhm | after the Versailles Treaty |
| Ellerbruch | German Empire | Stuhm | 1939 |
| Ellerbruch | German Empire | Stuhm | 1939 |
| Olszówka | Under Polish administration | Sztum | 1945 |
| Olszówka | Poland | Elbląg | 1992 |