Piotrowiec was formerly part of the German Empire. In the German Empire, the place was called Peterswalde.
The place is now called Piotrowiec and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Peterswalde | German Empire | Braunsberg (Ostpr.) | 1939 |
| Piotrowiec | Under Polish administration | Braniewo | 1945 |
| Piotrowiec | Poland | Elbląg | 1992 |