Karlov was formerly part of the German Empire. In the German Empire, the place was called Karlov.
The place is now called Karlov and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Karlsdorf | Austro-Hungary | Neupaka | before the Treaty of Saint-Germain |
| Karlov | Austro-Hungary | Neupaka | before the Treaty of Saint-Germain |
| Karlov | Czechoslovakia | Nová Paka | after the Treaty of Saint-Germain |
| Karlsdorf | German Empire | Neupaka | 1939 |
| Karlov | German Empire | Neupaka | 1939 |
| Karlov | Czechoslovakia | Nová Paka | 1945 |
| Karlov | Czechoslovakia | Východní Čechy | 1992 |