Chrašťany was formerly part of the German Empire. In the German Empire, the place was called Groschau.
The place is now called Chrašťany and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Groschau | Austro-Hungary | Podersam | before the Treaty of Saint-Germain |
| Chrašťany | Austro-Hungary | Podersam | before the Treaty of Saint-Germain |
| Chrašťany | Czechoslovakia | Podbořany | after the Treaty of Saint-Germain |
| Groschau | Czechoslovakia | Podbořany | after the Treaty of Saint-Germain |
| Groschau | German Empire | Podersam | 1938 |
| Chrašťany | Czechoslovakia | Podbořany | 1945 |
| Chrašťany | Czechoslovakia | Louny | 1992 |
| Chrašťany | Czech Republic | Louny | 1993 |