Horka was formerly part of the German Empire. In the German Empire, the place was called Dolejši Hůrky.
The place is now called Dolejší Hůrky and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Horka | Austro-Hungary | Saaz | before the Treaty of Saint-Germain |
| Dolejší Hůrky | Austro-Hungary | Saaz | before the Treaty of Saint-Germain |
| Dolejší Hůrky | Czechoslovakia | Žatec | after the Treaty of Saint-Germain |
| Horka | Czechoslovakia | Žatec | after the Treaty of Saint-Germain |
| Horka | German Empire | Saaz | 1938 |
| Dolejši Hůrky | German Empire | Saaz | 1938 |
| Dolejší Hůrky | Czechoslovakia | Žatec | 1945 |
| Dolejší Hůrky | Czechoslovakia | Louny | 1992 |
| Dolejší Hůrky | Czech Republic | Louny | 1993 |