Members
- Alsfeld
- Bad Karlshafen
- Bad Oeynhausen
- Bad Sooden-Allendorf
- Bad Wildungen
- Baunatal (soon)
- Bodenwerder
- Bovenden (soon)
- Bremen
- Buxtehude
- Ebergötzen (soon)
- Frankenberg
- Freiensteinau (soon)
- Fritzlar
- Fürstenberg (soon)
- Gelnhausen
- Grebenhain
- Grebenstein (soon)
- Gudensberg
- Göttingen
- Hameln
- Hanau
- Hann. Münden
- Heilbad Heiligenstadt (soon)
- Helsa (soon)
- Herbstein
- Hessian Lichtenau
- Hessian Oldendorf
- Hofgeismar
- Holzminden
- Homberg (Efze)
- Hoya / Weser
- Kassel
- Kaufungen (soon)
- Knüllwald
- Lahntal (soon)
- Land of Mother Hulda
- Landkreis Holzminden (soon)
- Landkreis Kassel (soon)
- Lügde
- Mackenrode
- Marburg
- Melsungen
- Neukirchen
- Niedenstein
- Nienburg/Weser
- Nieste (soon)
- Oberweser (soon)
- Polle (soon)
- Schauenburg (soon)
- Schwalenberg
- Schwalm-Eder county
- Schwalmstadt (soon)
- Steinau an der Straße
- Trendelburg
- Verden (Aller)
- Wahlsburg (soon)
- Waldeck
- Waldecker Land
- Wiedensahl
- Willingshausen (soon)
- Witzenhausen
- Wolfhagen