Rzgow was formerly part of the German Empire. In the German Empire, the place was called Roggenheim.
The place is now called Rzgów and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Rzgow | Russian Empire | Konin | 1914 |
| Rzgów | Poland | Konin | 1921 |
| Rzgów | German Empire | Konin | 1939 |
| Roggen | German Empire | Konin | 1939 |
| Roggenheim | German Empire | Konin | 1939 |
| Rzgów | Poland | Konin | 1945 |
| Rzgów | Poland | Konin | 1992 |