Jankowo was formerly part of the German Empire. In the German Empire, the place was called Janken.
The place is now called Jankowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Jankowo | Russian Empire | Lipno | 1914 |
| Jankowo | Poland | Lipno | after the Versailles Treaty |
| Janken | German Empire | Leipe (Westpr.) | 1939 |
| Jankowo | Poland | Lipno | 1945 |
| Jankowo | Poland | Włocławek | 1992 |