Piotrkowo was formerly part of the German Empire. In the German Empire, the place was called Peterkau.
The place is now called Piotrkowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Peterkau | German Empire | Rosenberg i. Westpr. | before the Versailles Treaty |
| Peterkau | German Empire | Rosenberg i. Westpr. | after the Versailles Treaty |
| Peterkau | German Empire | Rosenberg i. Westpr. | 1939 |
| Peterkau | German Empire | Rosenberg i. Westpr. | 1939 |
| Piotrkowo | Under Polish administration | Susz | 1945 |
| Piotrkowo | Poland | Elbląg | 1992 |