Pláň was formerly part of the German Empire. In the German Empire, the place was called Planes.
The place is now called Pláň and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Planes | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Pláň | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Pláň | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Planes | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Planes | German Empire | Tepl | 1938 |
| Pláň | Czechoslovakia | Stříbro | 1945 |
| Pláň | Czechoslovakia | Plzeň-sever | 1992 |
| Pláň | Czech Republic | Plzeň-sever | 1993 |