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