 After Adolf Hitler’s downfall and Germany's defeat in the Second World War, the municipality was grouped into the then newly founded (1946) state of Rhineland-Palatinate, all the while still in the Birkenfeld district, but now also in the "Regierungsbezirk" of Koblenz.In the course of administrative restructuring in the state, Niederalben passed to the "Regierungsbezirk" of Rheinhessen-Pfalz, and in 1969, it was transferred, this time to the Kusel district, in which it remains today.In 1972, Niederalben was grouped as an "Ortsgemeinde" into the "Verbandsgemeinde" of Altenglan.