Polenšak was formerly part of the German Empire. In the German Empire, the place was called Steinperg.
The place is now called Polenšak and belongs to Slovenia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Polenschak | Austro-Hungary | Pettau/Ptuj | before the Treaty of Saint-Germain |
| Polenšak | Austro-Hungary | Pettau/Ptuj | before the Treaty of Saint-Germain |
| Polenšak | Yugoslavia | Ptuj | after the Treaty of Saint-Germain |
| Steinperg | German Empire | Pettau | 1941 |
| Polenšak | Yugoslavia | Ptuj | 1945 |
| Polenšak | Yugoslavia | Socialistična rep. Slovenija | 1992 |
| Polenšak | Slovenia | Slowenien | 1991 |