Sgonn was formerly part of the German Empire. In the German Empire, the place was called Hirschen.
The place is now called Zgon and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sgonn | German Empire | Sensburg | 1938 |
| Hirschen | German Empire | Sensburg | 1939 |
| Zgon | Under Polish administration | Mrągowo | 1945 |
| Zgon | Poland | Olsztyn | 1992 |