????-2005[]
2005-20??[]
20??-present[]
Districts Ammerland | Aurich | Braunschweig | Celle | Cloppenburg | Cuxhaven | Delmenhorst | Diepholz | Emden | Emsland | Friesland | Gifhorn | Goslar | Göttingen | Grafschaft Bentheim | Hameln-Pyrmont | Hannover | Harburg | Heidekreis | Helmstedt | Hildesheim | Holzminden | Leer | Lüchow-Dannenberg | Lüneburg | Nienburg/Weser | Northeim | Oldenburg (rural) | Oldenburg (urban) | Osnabrück (rural) | Osnabrück (urban) | Osterholz | Peine | Rotenburg (Wümme) | Salzgitter | Schaumburg | Stade | Uelzen | Vechta | Verden | Wesermarsch | Wilhelmshaven | Wittmund | Wolfenbüttel | Wolfsburg Former Districts |