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