Siołkowice was formerly part of the German Empire. In the German Empire, the place was called Schalkendorf.
The place is now called NN and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Schalkowitz | German Empire | Oppeln | 1939 |
| Schalkendorf | German Empire | Oppeln | 1939 |
| Siołkowice | Under Polish administration | Opole | 1945 |
| NN | Poland | Opole | 1993 |