Grójec was formerly part of the German Empire. In the German Empire, the place was called Grundhofen.
The place is now called Grójec and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Grujec | German Empire | Schroda | before the Versailles Treaty |
| Grójec | Poland | Środa | after the Versailles Treaty |
| Grundhofen | German Empire | Schroda | 1939 |
| Grójec | Poland | Środa | 1945 |
| Grójec | Poland | Poznań | 1992 |