 After the Second World War, Langweiler at first lay in a "Regierungsbezirk" of the same name within the then newly founded state of Rhineland-Palatinate.In the course of administrative restructuring in Rhineland-Palatinate, the "Amt" of Grumbach was dissolved and in 1969, Langweiler was transferred, this time to the Kusel district, in which it remains today.In 1972, it was transferred to the then newly founded "Verbandsgemeinde" of Lauterecken, and at the same time from the "Regierungsbezirk" of Koblenz to the then newly founded (but since dissolved) "Regierungsbezirk" of Rheinhessen-Pfalz.