Boruja was formerly part of the German Empire. In the German Empire, the place was called Mühlengraben.
The place is now called Boruja and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Borui (Dorf) | German Empire | Bomst | before the Versailles Treaty |
| Boruja | Poland | Wolsztyn | after the Versailles Treaty |
| Mühlengraben | German Empire | Wollstein | 1939 |
| Boruja | Poland | Wolsztyn | 1945 |
| Boruja | Poland | Zielona Góra | 1992 |