Iwanowen was formerly part of the German Empire. In the German Empire, the place was called Schlößchen *.
The place is now called Iwanowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Iwanowen | German Empire | Sensburg | 1914 |
| Schlößchen * | German Empire | Sensburg | 1939 |
| Iwanowo | Under Polish administration | Mrągowo | 1945 |
| Iwanowo | Poland | Suwałki | 1992 |