マインツ大司教
The territory was located roughly between the rivers Rhine, Moselle, and Nahe, in the present state of Rhineland-Palatinate, around the Hunsrück region. It bordered the Electorate of Trier to the north and west, the Raugraviate, the Electorate of Mainz and the Electorate of the Palatinate to the east and the County of Veldenz to the south and west, among other states.