Bačkau was formerly part of the German Empire. In the German Empire, the place was called Bačkov.
The place is now called Bačkov and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Bačkau | Austro-Hungary | Časlau | before the Treaty of Saint-Germain |
| Bačkov | Austro-Hungary | Časlau | before the Treaty of Saint-Germain |
| Bačkov | Czechoslovakia | Čáslav | after the Treaty of Saint-Germain |
| Batschkow | German Empire | Tschaslau | 1939 |
| Bačkov | German Empire | Tschaslau | 1939 |
| Bačkov | Czechoslovakia | Čáslav | 1945 |
| Bačkov | Czechoslovakia | Východní Čechy | 1992 |