Tarnówko, Folwark was formerly part of the German Empire. In the German Empire, the place was called Tarnen.
The place is now called Tarnówko and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Tarnowko | German Empire | Strelno | before the Versailles Treaty |
| Tarnówko, Folwark | Poland | Mogilno | after the Versailles Treaty |
| Tarnen | German Empire | Hohensalza | 1939 |
| Tarnówko | Poland | Inowrocław | 1945 |
| Tarnówko | Poland | Bydgoszcz | 1992 |