Erdesbach borders in the north on the municipality of Ulmet, in the east on the municipality of Bedesbach, in the south on the municipality of Altenglan, in the southwest on the municipality of Blaubach and in the west on the municipality of Oberalben.
270 (Kusel–Rammelsbach–Altenglan–Patersbach–Bedesbach–Erdesbach–Ulmet–Rathsweiler–Niederalben–Eschenau–Sankt Julian–Glanbrücken–Offenbach am Glan–Wiesweiler–Lauterecken),