Miąża was formerly part of the German Empire. In the German Empire, the place was called Mohnberg.
The place is now called Miąża and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Mionza | German Empire | Wongrowitz | before the Versailles Treaty |
| Miąża | Poland | Wągrowiec | after the Versailles Treaty |
| Mohnberg | German Empire | Eichenbrück | 1939 |
| Miąża | Poland | Wągrowiec | 1945 |
| Miąża | Poland | Piła | 1992 |