Wilamowo was formerly part of the German Empire. In the German Empire, the place was called Wilhelmshof.
The place is now called Wilamowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Willamowen | German Empire | Ortelsburg | 1932 |
| Wilhelmshof | German Empire | Ortelsburg | 1939 |
| Wilamowo | Under Polish administration | Szczytno | 1945 |
| Wilamowo | Poland | Ostrołęka | 1992 |