Dierdorf is a town in the district of Neuwied, in Rhineland-Palatinate, Germany. It is situated in the Westerwald, approx. 20 km northeast of Neuwied, and 20 km north of Koblenz.
Dierdorf is the seat of the Verbandsgemeinde Dierdorf.
Wikipedia https://en.wikipedia.org/wiki/Dierdorf
Coordinates 50°32'52.399" N 7°39'23.187" E