Lubsko was formerly part of the German Empire. In the German Empire, the place was called Sommerfeld (Nd. Lausitz).
The place is now called Lubsko and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sommerfeld | German Empire | Crossen (Oder) | 1934 |
| Sommerfeld (Nd. Lausitz) | German Empire | Crossen (Oder) | 1939 |
| Lubsko | Under Polish administration | Krosno Odrzańskie | 1945 |
| Lubsko | Poland | Zielona Góra | 1992 |