Kopaczów was formerly part of the German Empire. In the German Empire, the place was called Oberullersdorf.
The place is now called Kopaczów and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Oberullersdorf | German Empire | Zittau | 1939 |
| Kopaczów | Under Polish administration | Zgorzelec | 1945 |
| Kopaczów | Poland | Jelenia Góra | 1992 |