Landgraviate of Hesse-Kassel
As of 1789, the principality had an area of . It was bordered by (clockwise from the north): an exclave of the Landgraviate of Hesse-Kassel (or Hesse-Cassel), the Electorate of Hanover, the County of Schaumburg-Lippe, another exclave of Hesse-Kassel, the Principality of Lippe, the County of Ravensberg, and the Prince-Bishopric of Osnabrück. Cities included Minden and Lübbecke.