Pfaffengrün was formerly part of the German Empire. In the German Empire, the place was called Pfaffengrün.
The place is now abandoned and the area belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Pfaffengrün | Austro-Hungary | Sankt Joachimsthal | before the Treaty of Saint-Germain |
| Pfaffengrün | Czechoslovakia | Jáchymov | after the Treaty of Saint-Germain |
| Pfaffengrün | German Empire | Sankt Joachimsthal | 1938 |
| Popov | Czechoslovakia | Jáchymov | 1945 |
| - aufgelassen - | Czechoslovakia | Karlovy Vary | 1992 |
| - aufgelassen - | Czech Republic | Karlovy Vary | 1993 |