Dębowiec was formerly part of the German Empire. In the German Empire, the place was called Eichenau.
The place is now called Dębowiec and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Dembowitz | German Empire | Neidenburg | 1935 |
| Eichenau | German Empire | Neidenburg | 1939 |
| Dębowiec | Under Polish administration | Nidzica | 1945 |
| Dębowiec | Poland | Olsztyn | 1992 |