Rohrkarr was formerly part of the German Empire. In the German Empire, the place was called Rohrkarr.
The place is now called Rørkær (Tønder-Rørkær) and belongs to Denmark.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Rohrkarr | German Empire | Tondern | before the Versailles Treaty |
| Rørkær | Denmark | Tønder | after the Versailles Treaty |
| Rørkær (Tønder-Rørkær) | Denmark | Sønderjylland | 1993 |