Hamrzysko was formerly part of the German Empire. In the German Empire, the place was called Hammersitzko.
The place is now called Hamrzysko and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Hamrzysko | German Empire | Czarnikau | before the Versailles Treaty |
| Hamrzysko | Poland | Czarnków | after the Versailles Treaty |
| Hammersitzko | German Empire | Scharnikau (Wartheland) | 1939 |
| Hamrzysko | Poland | Czarnków | 1945 |
| Hamrzysko | Poland | Piła | 1992 |