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 7621 39,3 km² Wiltz
Commune du La de la Haute-Sûre 2082 48,50 km² Commune du La de la Haute-Sûre
Boulaide 1384 32,13 km² Boulaide
Esch-sur-Sûre 3004 50,59 km² Esch-sur-Sûre
Winseler 1361 30,42 km² Winseler
Total 15.452 200,94 km2