Bílsko was formerly part of the German Empire. In the German Empire, the place was called Bílsko.
The place is now called Bílsko and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Blsko | Austro-Hungary | Pisek | before the Treaty of Saint-Germain |
| Bílsko | Austro-Hungary | Pisek | before the Treaty of Saint-Germain |
| Bílsko | Czechoslovakia | Písek | after the Treaty of Saint-Germain |
| Bilsko | German Empire | Pisek | 1939 |
| Bílsko | German Empire | Pisek | 1939 |
| Bílsko | Czechoslovakia | Vodňany | 1945 |
| Bílsko | Czechoslovakia | Strakonice | 1992 |
| Bílsko | Czech Republic | Strakonice | 1993 |