Celje was formerly part of the German Empire. In the German Empire, the place was called Cilli.
The place is now called Celje and belongs to Slovenia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Cilli | Austro-Hungary | Cilli (St.Kr.)/Celje m. | before the Treaty of Saint-Germain |
| Celje | Austro-Hungary | Cilli (St.Kr.)/Celje m. | before the Treaty of Saint-Germain |
| Celje | Yugoslavia | Celje m. | after the Treaty of Saint-Germain |
| Cilli | German Empire | Cilli | 1941 |
| Celje | Yugoslavia | Celje | 1945 |
| Celje | Yugoslavia | Socialistična rep. Slovenija | 1992 |
| Celje | Slovenia | Slowenien | 1991 |