Dalem was formerly part of the German Empire. In the German Empire, the place was called Dahlem.
The place is now called Dalem and belongs to France.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Dalem | German Empire | Bolchen | before the Versailles Treaty |
| Dalem | France | Moselle | after the Versailles Treaty |
| Dahlem (Westmark) | German Empire | Sankt Avold | 1940 |
| Dahlem | German Empire | Sankt Avold | 1940 |
| Dalem | France | Moselle | 1945 |
| Dalem | France | Moselle | 1993 |