The village was first known by the name Ermingardibruggern, and was the seat of a knightly family, and later a customs office with market rights.

The council's 22 seats are apportioned thus, in accordance with municipal elections held on 30 August 2009: Note: UWG is a citizens' coalition.

Erndtebrück's civic coat of arms might heraldically be described thus: Party per fess, above in azure a bridge Or, below in argent two pallets sable.

Furthermore, trains run on the Rothaar Railway to both Siegen and Bad Berleburg, and on the Upper Lahn Valley (Obere Lahntalbahn) to Marburg.

Until 1944, there was also a rail connection to Altenhundem with the Erndtebrück-Altenhundem line, but this came to an end late in the Second World War as retreating German Army units blew its bridges up.