Brzozowo was formerly part of the German Empire. In the German Empire, the place was called Hartenstein (Ostpr.).
The place is now called Brzozowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Brosowen | German Empire | Angerburg | 1938 |
| Hartenstein (Ostpr.) | German Empire | Angerburg | 1939 |
| Brzozowo | Under Polish administration | Węgorzewo | 1945 |
| Brzozowo | Poland | Suwałki | 1992 |