Pieszkowo was formerly part of the German Empire. In the German Empire, the place was called Petershagen.
The place is now called Pieszkowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Petershagen | German Empire | Preußisch Eylau | 1939 |
| Pieszkowo | Under Polish administration | Górowo Iławeckie | 1945 |
| Pieszkowo | Poland | Olsztyn | 1992 |