Janówka was formerly part of the German Empire. In the German Empire, the place was called Jonasdorf.
The place is now called Janówka and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Jonasdorf | German Empire | Marienburg i. Westpr. | before the Versailles Treaty |
| Jonasdorf | German Empire | Marienburg | after the Versailles Treaty |
| Jonasdorf | German Empire | Marienburg | 1939 |
| Jonasdorf | German Empire | Marienburg (Westpr.) | 1939 |
| Janówka | Under Polish administration | Malbork | 1945 |
| Janówka | Poland | Elbląg | 1992 |