The city of Mainz (exonym: Mayence) is the capital (204,268 inhabitants end 2013) of Rhineland-Palatinate. Historically, the capital of the Electorate of Mainz at the time of the Holy Roman Empire, and of the Grand Duchy of Hesse.
Postmarks in Germany
Meter cancels (after 1945)
Postmarks in German Empire (1872-1945)
Meter Postmarks (before 1945)
Postmarks in North German Confederation
Since 1 January 1868.
Postmarks in Prussia
Since 1 July 1867. Kreis Mainz, District Hessen.
Postmarks by Thurn und Taxis
It used a postal code 134, District of Rheinhessen, Grand-Duchy of Hesse.