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).
From 1994 the "Brotherhood of Jesus" ("Jesus-Bruderschaft") from Hünfelden-Gnadental in the district of Limburg-Weilburg in Hesse took over the buildings and set up a community in them.