Trelkówko was formerly part of the German Empire. In the German Empire, the place was called Klein Schöndamerau.
The place is now called Trelkówko and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Klein Schöndamerau | German Empire | Ortelsburg | 1939 |
| Trelkówko | Under Polish administration | Szczytno | 1945 |
| Trelkówko | Poland | Olsztyn | 1992 |