SaarLorLux
Rhineland-Palatinate is one of the 16 Bundesländer (federal states) of Germany. It has an area of 19,846 km² and about 4.048 million inhabitants. The capital is Mainz. The federal state of Rhineland-Palatinate was established on 30 August 1946.
Wiesweiler
After the Second World War, the village lay at first within the "Regierungsbezirk" of Koblenz in the then newly founded state of Rhineland-Palatinate. In the course of administrative restructuring in Rhineland-Palatinate in 1968, the "Amt" of Grumbach was dissolved. Wiesweiler passed in 1972 to the then newly founded "Verbandsgemeinde" of Lauterecken, and at the same time also from the "Regierungsbezirk" of Koblenz to the newly founded "Regierungsbezirk" of Rheinhessen-Pfalz (the system of "Regierungsbezirke" in Rhineland-Palatinate has since been abolished).