Lomnitz an der Popelka was formerly part of the German Empire. In the German Empire, the place was called Lomnice nad Popelkou.
The place is now called Lomnice nad Popelkou and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lomnitz an der Popelka | Austro-Hungary | Semil | before the Treaty of Saint-Germain |
| Lomnice nad Popelkou | Austro-Hungary | Semil | before the Treaty of Saint-Germain |
| Lomnice nad Popelkou | Czechoslovakia | Semily | after the Treaty of Saint-Germain |
| Lomnitz an der Popelka | German Empire | Semil | 1939 |
| Lomnice nad Popelkou | German Empire | Semil | 1939 |
| Lomnice nad Popelkou | Czechoslovakia | Semily | 1945 |
| Lomnice nad Popelkou | Czechoslovakia | Východní Čechy | 1992 |