Uhlkau was formerly part of the German Empire. In the German Empire, the place was called Uhlkau.
The place is now called Ulkowy and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Uhlkau | German Empire | Dirschau | before the Versailles Treaty |
| Uhlkau | Free City of Danzig | Danziger Höhe | after the Versailles Treaty |
| Uhlkau | German Empire | Danzig | 1939 |
| Ulkowy | Poland | Pruszcz Gdański | 1945 |
| Ulkowy | Poland | Gdańsk | 1992 |