Horní Chrášťany was formerly part of the German Empire. In the German Empire, the place was called Ober Groschum.
The place is now called Horní Chrášťany and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ober-Groschum | Austro-Hungary | Prachatitz | before the Treaty of Saint-Germain |
| Horní Chrášťany | Austro-Hungary | Prachatitz | before the Treaty of Saint-Germain |
| Horní Chrášťany | Czechoslovakia | Prachatice | after the Treaty of Saint-Germain |
| Ober-Groschum | Czechoslovakia | Prachatice | after the Treaty of Saint-Germain |
| Ober Groschum | German Empire | Krummau/Moldau (Böhm.-Krumau) | 1938 |
| Horní Chrášťany | Czechoslovakia | Prachatice | 1945 |
| Horní Chrášťany | Czechoslovakia | Prachatice | 1992 |
| Horní Chrášťany | Czech Republic | Prachatice | 1993 |