Sanct Primus was formerly part of the German Empire. In the German Empire, the place was called Birkenhof.
The place is now called Primož and belongs to Slovenia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sanct Primus | Austro-Hungary | Cilli/Celje | before the Treaty of Saint-Germain |
| Sveti Primož | Austro-Hungary | Cilli/Celje | before the Treaty of Saint-Germain |
| Sveti Primož I | Yugoslavia | Celje | after the Treaty of Saint-Germain |
| Birkenhof | German Empire | Cilli | 1941 |
| Primož pri Šentjuru | Yugoslavia | Celje | 1945 |
| Primož pri Šentjuru | Yugoslavia | Socialistična rep. Slovenija | 1992 |
| Primož | Slovenia | Slowenien | 1991 |