The Untertaunus region was part of the Earldom of Katzenelnbogen. From 1816 onward, the whole area of the district became part of the Duchy of Nassau. After the 1866 Austro-Prussian war, Nassau was annexed by Prussia and formed the new province of Hesse-Nassau.
In 1867, the province was divided into districts. Therefore, the districts of Rheingau and Untertaunus were created.
After the Second World War and the creation of Hesse in 1946, these two districts remained unchanged. Only in 1977, because administrative borders were redrawn, the districts of Rheingau and Untertaunus merged and thus formed the Rheingau-Taunus district.
Geography
The district covers the western part of the Taunus mountains. The riverRhine forms the district's border in the south.
Politics
District council
Recent district elections had the following results:[2]
The coat of arms combines the coat of arms of the two former districts - in the bottom right the Mainz wheel taken from the Rheingau district, in the top left the lion of Nassau from the former Untertaunuskreis.