The municipality lies at the southwest edge of the Soonwald, a heavily wooded section of the west-central Hunsrück.

In Gemünden, the Lametbach empties into the Simmerbach, whereupon the combined stream is known down to its mouth into the river Nahe as the Kellenbach.

This holding of the Counts of Sponheim was granted town rights along with its trappings, namely fortifications, a court and a market.

The municipal election held on 7 June 2009 yielded the following results:[3] Gemünden’s mayor is Agnes Chudy.

[1] The German blazon reads: Schild geteilt, oben blau/gold geschacht, unten in Rot eine silberne Gewandschließe.