Družec was formerly part of the German Empire. In the German Empire, the place was called Družec.
The place is now called Družec and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Družetz | Austro-Hungary | Kladno | before the Treaty of Saint-Germain |
| Družec | Austro-Hungary | Kladno | before the Treaty of Saint-Germain |
| Družec | Czechoslovakia | Kladno | after the Treaty of Saint-Germain |
| Druschetz | German Empire | Kladno | 1939 |
| Družec | German Empire | Kladno | 1939 |
| Družec | Czechoslovakia | Kladno | 1945 |
| Družec | Czechoslovakia | Kladno | 1992 |
| Družec | Czech Republic | Kladno | 1993 |