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