It was formed on 1 January 2008 from the former Ämter Schuby and Silberstedt.
He was also given the Ämter of Weida, Ziegenrück and Arnshaugk, which belonged to what later became the district of Neustädter Kreis.
It was formed on 1 January 2008 from the former Ämter Bokhorst and Wankendorf.
In January 2008, it was merged with the Ämter Karrharde, Süderlügum and Wiedingharde, and the municipalities Niebüll and Leck to form the Amt Südtondern.
It was formed on 1 January 2008 from the former Ämter Gelting and Steinbergkirche.
It was formed on 1 January 2008 from the former Ämter Kirchspielslandgemeinde Heide-Land and Kirchspielslandgemeinde Weddingstedt and the municipality Norderwöhrden.
It was formed on 1 January 2008 from the former Ämter Kropp and Stapelholm.
It was formed on 1 January 2012 from the three former Ämter Aukrug, Hanerau-Hademarschen and Hohenwestedt-Land and the municipality Hohenwestedt.
In 1592, after the death of Duke William, the territory was enlarged with the Ämter of Hitzacker, Lüchow and Warpke, but Henry's demands for a transfer of sovereignty were not met.
It was formed on 1 January 2008 from the former Ämter Sandesneben and Nusse.
The wildlife plague caused by noble gamekeeping reserves initially led to unrest in game in Wehlen, which rapidly spread to other districts (Ämter).
It was formed on 1 January 2008 from the former Ämter Schlei, Schwansen and Windeby.
His domain included inter alia the territories of Sonderburg, Norburg, Ærø, Plön and Ahrensbök together with their assigned Ämter or administrative offices.
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The seat of the duke was Sonderburg, but parts of the domain were located in Denmark (in the Duchy of Schleswig), mainly on the islands of Als and Ærø and around Glücksburg, whilst other lands were part of the Holy Roman Empire (in the Duchy of Holstein), including the Ämter of Plön, Ahrensbök, and Reinfeld.
The territorial centres of Schleswig-Holstein-Plön were the districts (Ämter) of Ahrensbök and Reinfeld established after the Reformation by the merging of the former abbeys at Ahrensbök and Reinfeld.
In January 2008, it was merged with the Ämter Karrharde, Süderlügum and Bökingharde, and the municipalities Niebüll and Leck to form the Amt Südtondern.