Poratsch was formerly part of the German Empire. In the German Empire, the place was called Poratsch.
The place is now abandoned and the area belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Poratsch | Austro-Hungary | Dux | before the Treaty of Saint-Germain |
| Pohradice | Austro-Hungary | Dux | before the Treaty of Saint-Germain |
| Pohradice | Czechoslovakia | Duchcov | after the Treaty of Saint-Germain |
| Poratsch | Czechoslovakia | Duchcov | after the Treaty of Saint-Germain |
| Poratsch | German Empire | Bilin | 1938 |
| Pohradice | Czechoslovakia | Bílina | 1945 |
| - aufgelassen - | Czechoslovakia | Teplice | 1992 |
| - aufgelassen - | Czech Republic | Teplice | 1993 |