The district was created in 1815, when the
Prussian province of Saxony was created. The area of Lohra-Clettenberg (the former dukedom County Hohnstein) and the previously independent imperial city of Nordhausen were then administered together. In 1882-3 Nordhausen left the district, which led to its renaming as the
Kreis Grafschaft Hohenstein (district county of Hohenstein) in 1888. After
World War II the name reverted to
Landkreis Nordhausen, and in 1950 the city of Nordhausen was reincorporated into the district. In the administrative reform of 1952 several municipalities changed districts: a number were transferred from the district of Sangerhausen to that of Nordhausen, while others were transferred from Nordhausen to the districts of Worbis, Wernigerode, Sondershausen, and Sangerhausen. ==Geography==