 It was formed on 1 January 2008 from the former "Ämter" Bökingharde, Karrharde, Süderlügum and Wiedingharde, and the municipalities Niebüll and Leck.In addition to the main seat in Niebüll, there are offices in Leck, Risum-Lindholm and Süderlügum.The "Amt" Südtondern consists of the following municipalities