The Idarkopf lies in the northeastern part of the Idar Forest and within the Saar-Hunsrück Nature Park. Its summit rises around 2 km northwest of the village of Stipshausen (county of Birkenfeld) and 4 km southeast of the village of Hochscheid (Bernkastel-Wittlich). Whilst the summit and the southeastern flank of the mountain belong to Stipshausen, its western flanks up to the crest and northern to northeastern areas belong to the village of Weitersbach (county of Birkenfeld) which lies 3.5 km east-northeast of the summit (both distances as the crow flies). The Idarbach stream flows past the Idarkopf to the northeast.