The Jeverland was formed in the 15th century from the Barony of Jever, which itself descended from the Banter Viertel, part of Östringen and the Wangerland.
The town of Wilhelmshaven, founded in 1853, no longer belongs to Jeverland, but is an independent district.
Despite that, the formerly independent church parishes of Heppens und Neuende are on the town's territory.
Trade was chiefly handled by the small coastal 'sluice' ports (Sielhafen) of Hooksiel, Rüstringersiel and Mariensiel.
The state of Kniphausen, which was for a time entirely politically independent, was also located in Jeverland along with its two ports of Inhausersiel and Kniphausersiel.