Ermsdorf (Luxembourgish: Iermsdref) is a village in eastern Luxembourg. It is part of the canton of Diekirch, which is part of the district of Diekirch.
As of 2005Eppeldorf and Stegen.
, the village of Ermsdorf, which lies in the south of the commune, has a population of 221. Other towns within the commune include
Since 2011, Ermsdorf has merged with Medernach to become the "Aerenzdallgemeng" (commune de la Vallée de l'Ernz, Ernztalgemeinde)
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Coordinates: 49°50′N 6°13′E / 49.833°N 6.217°E