Wloclawek was formerly part of the German Empire. In the German Empire, the place was called Leslau.
The place is now called Włocławek and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wloclawek | Russian Empire | Vloclavek | 1914 |
| Włocławek | Poland | Włocławek | 1921 |
| Leslau | German Empire | Leslau (St.Kr.) | 1939 |
| Włocławek | Poland | Włocławek m. | 1945 |
| Włocławek | Poland | Włocławek | 1992 |