 The municipal area measures 491 ha, of which roughly 20 ha is settled and 139 ha is wooded.Lohnweiler borders in the north on the town of Lauterecken, in the northeast on the municipality of Hohenöllen, in the southeast on the municipality of Heinzenhausen, in the south on the town of Wolfstein, in the southwest on the municipality of Offenbach-Hundheim and in the west on the municipality of Wiesweiler.Lohnweiler also meets the municipality of Aschbach at a single point in the southwest.