The Idarkopf lies in the northeastern part of the Idar Forest and within the Saar-Hunsrück Nature Park. Its summitrises around 2 km northwest of the village of Stipshausen and 4 km southeast of the village of Hochscheid. Whilst the summit and the southeastern flank of the mountain belong to Stipshausen, its westernflanks up to the crest and northern to northeastern areas belong to the village of Weitersbach which lies 3.5 km east-northeast of the summit. The Idarbach stream flows past the Idarkopf to the northeast.