Piekau was formerly part of the German Empire. In the German Empire, the place was called Pěkov.
The place is now called Pěkov and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Piekau | Austro-Hungary | Braunau | before the Treaty of Saint-Germain |
| Pěkov | Austro-Hungary | Braunau | before the Treaty of Saint-Germain |
| Pěkov | Czechoslovakia | Broumov | after the Treaty of Saint-Germain |
| Piekau | German Empire | Nachod | 1939 |
| Pěkov | German Empire | Nachod | 1939 |
| Pěkov | Czechoslovakia | Broumov | 1945 |
| Pěkov | Czechoslovakia | Východní Čechy | 1992 |