Karlsthal was formerly part of the German Empire. In the German Empire, the place was called Karlsthal.
The place is now called Karlovka and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Karlsthal | Austro-Hungary | Tetschen | before the Treaty of Saint-Germain |
| Karlsthal | Czechoslovakia | Děčín | after the Treaty of Saint-Germain |
| Karlsthal | German Empire | Tetschen | 1938 |
| Karlovka | Czechoslovakia | Děčín | 1945 |
| Karlovka | Czechoslovakia | Děčín | 1992 |
| Karlovka | Czech Republic | Děčín | 1993 |