The Öewersauer Nature Park currently consists of 5 municipalities: Boulaide, Esch-sur-Sûre, Commune du Lac de la Haute-Sûre, Wiltz and Winseler.
Since January 2020 the Nature Park has been working very closely with the municipality of Goesdorf with a view to joining the Nature Park at a later date.
| Municipality | Population | Surface | Link |
|---|---|---|---|
| Wiltz | 7.020 | 39,3 km² | Wiltz |
| Commune du La de la Haute-Sûre | 1.987 | 48,5 km² | Commune du La de la Haute-Sûre |
| Boulaide | 1.306 | 32,1 km² | Boulaide |
| Esch-sur-Sûre | 2.784 | 50,6 km² | Esch-sur-Sûre |
| Winseler | 1.085 | 30,4 km² | Winseler |
| Total | 14.182 | 200,90 km2 | |