Kopain was formerly part of the German Empire. In the German Empire, the place was called Kopain.
The place is now called Kopań and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kopain | German Empire | Pleß | before the Versailles Treaty |
| Kopań | Poland | Pszczyna | after the Versailles Treaty |
| Kopain | German Empire | Pleß | 1939 |
| Kopań | Poland | Pszczyna | 1945 |
| Kopań | Poland | Katowice | 1992 |