Category:Kingdom of Hanover Postmarks

In 1823, the Kingdom was reorganised into high-bailiwicks (German: Landdrosteien).

The high-bailiwicks were the following:

   Aurich, comprising former East Frisia
   Hanover, comprising the former Principality of Calenberg in the Duchy of Brunswick-Lüneburg
   Hildesheim, comprising the former Brunswick-Lüneburg Principality of Grubenhagen and the former Prince-Bishopric of Hildesheim
   Lüneburg, comprising the former Brunswick-Lüneburg Principality of Lüneburg and the remainder of Saxe-Lauenburg areas
   Osnabrück, comprising the former County of Bentheim, the former Lower County of Lingen, and the former Prince-Bishopric of Osnabrück
   Stade, comprising the former Duchies of Bremen-Verden

The Hanoverian subdivisions into high-bailiwicks and bailiwicks remained unchanged until 1 April 1885, when they were replaced by Prussian-style provinces (Regierungsbezirke) and districts (Kreise).