Breitscheid lies from 266 to 600 m above sea level on the eastern slope of the Westerwald range at the point shared by three German states: Hesse, Rhineland-Palatinate and North Rhine-Westphalia.

Erdbach, a constituent community, lies in an interesting place with regards to Earth's history, in the eastern part of the Westerwald, near that range's highest peak, Fuchskauten (657 m).

The older limestone formation near Breitscheid (main centre) stems from a subtropical coral reef from the Devonian period (mid-Palaeozoic, 400,000,000 years ago).

In the "stone chambers" of the Rolsbach valley, some gravesites from Hallstatt times (about 550 BC) were unearthed in 1884.

The municipal elections on 26 March 2006 yielded the following results: Note: FWG is a citizens' coalition.