 The municipal area measures 555 ha, of which 161 ha is wooded.Krottelbach borders in the north and east on the municipality of Herschweiler-Pettersheim, in the southeast on the municipality of Ohmbach, in the southwest on the municipality of Frohnhofen, in the west on the town of Sankt Wendel (Saarland) and in the northwest on the municipality of Langenbach.Krottelbach also meets the municipality of Altenkirchen at a single point in the south.