Bierzwnica was formerly part of the German Empire. In the German Empire, the place was called Reinfeld.
The place is now called Bierzwnica and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Reinfeld | German Empire | Belgard (Persante) | 1939 |
| Bierzwnica | Under Polish administration | Białogard | 1945 |
| Bierzwnica | Poland | Koszalin | 1992 |