Moncourt was formerly part of the German Empire. In the German Empire, the place was called Mohnhofen.
The place is now called Moncourt and belongs to France.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Moncourt | German Empire | Château-Salins | before the Versailles Treaty |
| Monhofen in Lothringen | German Empire | Château-Salins | before the Versailles Treaty |
| Moncourt | France | Moselle | after the Versailles Treaty |
| Mohnhofen b. Duß | German Empire | Salzburgen | 1940 |
| Mohnhofen | German Empire | Salzburgen | 1940 |
| Moncourt | France | Moselle | 1945 |
| Moncourt | France | Moselle | 1993 |