Karznica was formerly part of the German Empire. In the German Empire, the place was called Ramnitz.
The place is now called Karznica and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wendisch Karstnitz | German Empire | Stolp | 1937 |
| Ramnitz | German Empire | Stolp | 1939 |
| Karznica | Under Polish administration | Słupsk | 1945 |
| Karznica | Poland | Słupsk | 1992 |