 The municipality lies at the foot of the 437 m-high Hühnerkopf in the Saubeertal (valley) in the Western Palatinate.Wahnwegen's elevation is roughly 310 m above sea level and the village lies in the Bledesbach's headwaters, northeast of the Hühnerkopf (“Chickenhead” – a mountain) with its stone quarries, although these lie within Herschweiler-Pettersheim's limits.A relatively narrow strip of land roughly 3 km long and barely 1 km wide forms Wahnwegen's municipal area, broadening out somewhat towards the north.