Vester-Gasse was formerly part of the German Empire. In the German Empire, the place was called Wester-Gasse.
The place is now called Vester Gasse and belongs to Denmark.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wester-Gasse | German Empire | Hadersleben | before the Versailles Treaty |
| Vester-Gasse | Denmark | Tønder | after the Versailles Treaty |
| Vester Gasse | Denmark | Sønderjylland | 1993 |