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