Jankówko was formerly part of the German Empire. In the German Empire, the place was called Morgenau.
The place is now called Jankówko and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Morgenau | German Empire | Gnesen | before the Versailles Treaty |
| Jankówko | Poland | Gniezno | after the Versailles Treaty |
| Morgenau | German Empire | Gnesen | 1939 |
| Jankówko | Poland | Gniezno | 1945 |
| Jankówko | Poland | Poznań | 1992 |