Morsk was formerly part of the German Empire. In the German Empire, the place was called Schloßdorf.
The place is now called Morsk and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Morsk | German Empire | Schwetz | before the Versailles Treaty |
| Morsk | Poland | Świecie | after the Versailles Treaty |
| Schloßdorf | German Empire | Schwetz (Weichsel) | 1939 |
| Morsk | Poland | Świecie | 1945 |
| Morsk | Poland | Bydgoszcz | 1992 |