Radziejów was formerly part of the German Empire. In the German Empire, the place was called Juliusburg.
The place is now called Radziejów and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Juliusburg | German Empire | Cosel | 1939 |
| Radziejów | Under Polish administration | Koźle | 1945 |
| Radziejów | Poland | Opole | 1992 |