They are located between Weißenborn-Lüderode to the north, Bleicherode to the southeast, Worbis to the south and Teistungen to the west, and extend from the upper reaches of the River Helme in the north to the Wipper in the south.

To the north and west the range is adjoined by historic landscape of the Lower Eichsfeld (Untereichsfeld), further south is the ridge of the Dün and to the southwest the Eichsfeld-Hainich-Werra Valley Nature Park.

According to "Kassel map" of the natural regional classification of Germany the Ohm Hills are grouped as follows:[2][3] The Thuringian State office for the Environment and Geology uses a rather coarser, self-published, region classification, within which the landscape of "Ohm Hills-Bleicherode Hills" is enclosed by the landscape unit "North Thuringian Buntsandstein Land".

They appear as a continuation of the hills fringing the northwestern perimeter of the Thuringian Basin interrupted only by the Lower Eichsfeld lowland.

Whilst the Hahle is part of the catchment area of the Leine and Weser rivers, the Bode, Helme and Wipper are in the Elbe's drainage basin.