Aarøsund was formerly part of the German Empire. In the German Empire, the place was called Aarösund.
The place is now called Årøsund (Haderslev-Årøsund) and belongs to Denmark.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Aarösund | German Empire | Hadersleben | before the Versailles Treaty |
| Aarøsund | Denmark | Haderslev | after the Versailles Treaty |
| Årøsund (Haderslev-Årøsund) | Denmark | Sønderjylland | 1993 |