Kozly was formerly part of the German Empire. In the German Empire, the place was called Kozly.
The place is now called Kozly and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kozel | Austro-Hungary | Brandeis | before the Treaty of Saint-Germain |
| Kozly | Austro-Hungary | Brandeis | before the Treaty of Saint-Germain |
| Kozly | Czechoslovakia | Brandýs nad Labem | after the Treaty of Saint-Germain |
| Kosel | German Empire | Brandeis an der Elbe | 1939 |
| Kozly | German Empire | Brandeis an der Elbe | 1939 |
| Kozly | Czechoslovakia | Brandýs nad Labem | 1945 |
| Kozly | Czechoslovakia | Mělník | 1992 |
| Kozly | Czech Republic | Mělník | 1993 |