Helmbach was formerly part of the German Empire. In the German Empire, the place was called Helmbach.
The place is now abandoned and the area belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Helmbach | Austro-Hungary | Prachatitz | before the Treaty of Saint-Germain |
| Michlova Huť | Austro-Hungary | Prachatitz | before the Treaty of Saint-Germain |
| Michlova Huť | Czechoslovakia | Prachatice | after the Treaty of Saint-Germain |
| Helmbach | Czechoslovakia | Prachatice | after the Treaty of Saint-Germain |
| Helmbach | German Empire | Prachatitz | 1938 |
| Michlova Huť | Czechoslovakia | Vimperk | 1945 |
| Michlova Huť | Czechoslovakia | Prachatice | 1992 |
| - aufgelassen - | Czech Republic | Prachatice | 1993 |