Kotel was formerly part of the German Empire. In the German Empire, the place was called Kessel.
The place is now called Kotel and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kessel | Austro-Hungary | Böhmisch-Leipa | before the Treaty of Saint-Germain |
| Kotel | Austro-Hungary | Böhmisch-Leipa | before the Treaty of Saint-Germain |
| Kotel | Czechoslovakia | Česká Lípa | after the Treaty of Saint-Germain |
| Kessel | Czechoslovakia | Česká Lípa | after the Treaty of Saint-Germain |
| Kessel | German Empire | Reichenberg | 1938 |
| Kotel | Czechoslovakia | Liberec | 1945 |
| Kotel | Czechoslovakia | Liberec | 1992 |
| Kotel | Czech Republic | Liberec | 1993 |