Promoted in 780 as Metropolitan Archdiocese of Mainz
Demoted (back) on the 29th of November, 1801 to Diocese of Mainz (gained territory from Diocese of Metz, Diocese of Speyer, Metropolitan Archdiocese of Trier and Diocese of Worms)
Under Article 14 of the Reichskonkordat of 1933, which remains in force, the determination of the bishop to head the episcopal see and the composition of the chapter are governed by the provisions of Baden Concordat of 1932.
As per 2014, it pastorally served 749,583 Catholics (25.9% of 2,891,000 total) on 7,692 km2 in 319 parishes, 504 priests (409 diocesan, 95 religious), 124 deacons, 447 lay religious (132 brothers, 315 sisters), 19 seminarians.
It is divided into 20 deaneries, which in turn are divided into 136 pastoral care units. In 2007 these parish associations or parish groups included all 335 parishes and other chaplaincies of the diocese (as of 2007).[5] Pastoral units on the parish level have been introduced as a result of a profound structural change in the Catholic Church in Germany in many dioceses, the constitution of these units was determined by particular law [law of a particular region or territory], i.e., allowing for differences from one diocese to another. In the diocese of Mainz a parish group may be several parishes merged under the leadership of a single pastor. The parishes retain their church and state church legal personality. The pastor is attached to a pastoral team and a pastoral council. Parish associations, however, are combinations of several parishes, each with its own pastor. Several parish groups can join to form a parochial associations.
Catholic Education
Catholic Private Schools
The most important educational institution of the Diocese is the Catholic University of Applied Sciences, Mainz. Besides the Roman Catholic Diocese of Mainz and the (arch)dioceses of Cologne, Limburg, Speyer and Trier belong to the initiators of this university .
There are also other schools as the Edith-Stein-Schule in Darmstadt, Liebfrauenschule in Bensheim, the Episcopal Willigis-Gymnasium in Mainz, Abendgymnasium Ketteler of Mainz and the Episcopal College Willigis secondary school in Mainz.
Facilities at state universities
The diocese maintains three facilities at state universities. The most important of them is the Catholic Theological Faculty at the University of Mainz. In addition, there are at University of Giessen, the Institute for Catholic theology and their didactics, which is located at the Department of History and Cultural Studies. At the Technische Universität Darmstadt is an institute for theology and social ethics.
Bildungswerk der Diözese Mainz
The Bildungswerk der Diözese Mainz (educational works of the diocese of Mainz) promotes "... the church's adult education in the diocese from the parish to the diocesan level ..." The Bildungswerk is also a member of the Catholic Adult Education Hesse - Regional Working Group.
Stefan Burkhardt, Mit Stab und Schwert. Bilder, Träger und Funktionen erzbischöflicher Herrschaft zur Zeit Kaiser Friedrich Barbarossas. Die Erzbistümer Köln und Mainz im Vergleich. Thorbecke, Ostfildern, 2008
Friedhelm Jürgensmeier: Das Bistum Mainz. Von der Römerzeit bis zum II. Vatikanischen Konzil, Knecht Verlag, Frankfurt am Main, 1988, ISBN3-7820-0570-8
Hans Werner Nopper, Die vorbonifatianischen Mainzer Bischöfe. Mülheim, 2001
Franz Usinger, Das Bistum Mainz unter französischer Herrschaft (1798–1814). Falk, Mainz, 1911