Loukov was formerly part of the German Empire. In the German Empire, the place was called Loukov.
The place is now called -Loukov (Háje nad Jizerou-) and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Loukow | Austro-Hungary | Semil | before the Treaty of Saint-Germain |
| Loukov | Austro-Hungary | Semil | before the Treaty of Saint-Germain |
| Loukov | Czechoslovakia | Semily | after the Treaty of Saint-Germain |
| Loukow | German Empire | Semil | 1939 |
| Loukov | German Empire | Semil | 1939 |
| Loukov | Czechoslovakia | Semily | 1945 |
| -Loukov (Háje nad Jizerou-) | Czechoslovakia | Východní Čechy | 1992 |