Poštorná was formerly part of the German Empire. In the German Empire, the place was called Unterthemenau.
The place is now called Poštorná (Břeclav-Poštorná) and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Unter-Themenau | Austro-Hungary | Mistelbach | before the Treaty of Saint-Germain |
| Poštorny | Austro-Hungary | Mistelbach | before the Treaty of Saint-Germain |
| Poštorná | Czechoslovakia | Hodonín | after the Treaty of Saint-Germain |
| Unterthemenau | German Empire | Nikolsburg | 1938 |
| Poštorná | Czechoslovakia | Břeclav | 1945 |
| Poštorná (Břeclav-Poštorná) | Czechoslovakia | Břeclav | 1992 |
| Poštorná (Břeclav-Poštorná) | Czech Republic | Břeclav | 1993 |