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