Brzostowiec was formerly part of the German Empire. In the German Empire, the place was called Sophiadamm.
The place is now called Brzostowiec and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sophiadamm | German Empire | Wirsitz | before the Versailles Treaty |
| Brzostowiec | Poland | Wyrzysk | after the Versailles Treaty |
| Sophiadamm | German Empire | Wirsitz | 1939 |
| Brzostowiec | Poland | Wyrzysk | 1945 |
| Brzostowiec | Poland | Piła | 1992 |