The line passes through Taunusstein, Bad Schwalbach (called Langenschwalbach until 1927), Aarbergen and Hahnstätten, which all lie in the Aar valley in the western Hintertaunus (the lower north-western ridges of the Taunus).
Hünstetten borders in the north on the community of Hünfelden, in the northeast on the town of Bad Camberg (both in Limburg-Weilburg), in the east on the town of Idstein, in the south on the town of Taunusstein and in the west on the communities of Hohenstein and Aarbergen (all in the Rheingau-Taunus-Kreis).