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