Rychtal was formerly part of the German Empire. In the German Empire, the place was called Reichtal.
The place is now called Rychtal and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Reichthal | German Empire | Namslau | before the Versailles Treaty |
| Rychtal | Poland | Kępno | after the Versailles Treaty |
| Reichtal | German Empire | Kempen (Wartheland) | 1939 |
| Rychtal | Poland | Kępno | 1945 |
| Rychtal | Poland | Kalisz | 1992 |