Leopoldowiec was formerly part of the German Empire. In the German Empire, the place was called Leopoldsdorf.
The place is now called Leopoldowiec and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Leopoldsdorf | German Empire | Neustadt O.S. | 1939 |
| Leopoldowiec | Under Polish administration | Prudnik | 1945 |
| Leopoldowiec | Poland | Opole | 1992 |