Borkau was formerly part of the German Empire. In the German Empire, the place was called Borkau-Sabor.
The place is now called Borek and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Borkau | German Empire | Glogau | 1939 |
| Borkau-Sabor | German Empire | Glogau | 1939 |
| Borek | Under Polish administration | Głogów | 1945 |
| Borek | Poland | Legnica | 1992 |