Kořen was formerly part of the German Empire. In the German Empire, the place was called Kurschin.
The place is now called Kořen and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kurschin | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Kořen | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Kořen | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Kurschin | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Kurschin | German Empire | Tepl | 1938 |
| Kořen | Czechoslovakia | Mariánské Lázně | 1945 |
| Kořen | Czechoslovakia | Tachov | 1992 |
| Kořen | Czech Republic | Tachov | 1993 |