Aarup was formerly part of the German Empire. In the German Empire, the place was called Aarup.
The place is now called Årup (Åbenrå-Årup) and belongs to Denmark.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Aarup | German Empire | Apenrade | before the Versailles Treaty |
| Aarup | Denmark | Aabenraa | after the Versailles Treaty |
| Årup (Åbenrå-Årup) | Denmark | Sønderjylland | 1993 |