Diocese of Koper

Diocese of Koper; Dioecesis Iustinopolitana; Škofija Koper
	Assumption Cathedral, Koper Assumption Cathedral, Koper
Location
Country	Slovenia
Ecclesiastical province	Ljubljana
Statistics
Area	4,386 km2 (1,693 sq mi)
Population; Total; Catholics	(as of 2013); 266,403; 181,230 (68%)
Parishes	100
Information
Denomination	Catholic Church
Sui iuris church	Latin Church
Rite	Roman Rite
Cathedral	Cathedral of Mary's Assumption, Koper; (Slovene: Stolna cerkev Marijinega vnebovzetja)
Co-cathedral	Co-Cathedral of Christ the Saviour, Nova Gorica; (Konkatedrala Kristusa Odrešenika)
Current leadership
Pope	Leo XIV
Bishop	Jurij Bizjak
Metropolitan Archbishop	Stane Zore
Website
	Website of the Diocese

The Diocese of Koper (Latin: Dioecesis Iustinopolitana; Slovene: Škofija Koper; Italian: Diocesi di Capodistria) is a Latin Church diocese of the Catholic Church in southwestern Slovenia. It is part of the ecclesiastical province of Ljubljana. Its cathedral is dedicated to the Assumption of Mary and is located in the Adriatic port town of Koper. A co-cathedral, the Co-Cathedral of Christ the Saviour, located in Nova Gorica, gained its status in 2004. The Latin name of the diocese, Dioecesis Iustinopolitana, is because Koper was in the past named Justinopolis in honour of the Byzantine emperor Justinian II.

History

530: founded as Diocese of Capodistria, united to the Diocese of Trieste between 1828 and 1977
1947-1977: Apostolic administration for the diocesan parishes of the towns, including Capodistria, outside the Italian territory after World War II (in "Zone B" of the Free Territory of Trieste or directly in Yugoslavia)
October 17, 1977: Established as Diocese of Koper from the slovenian parts of the Archdiocese of Gorizia and the Diocese of Trieste–Koper, Italy, few days after the formal Yugoslav incorporation of Capodistria/Koper (when the 1975 Osimo Treaty took effect)

- 1 Janez Jenko (17 October 1977 – 15 April 1987)^[1]
  - Metod Pirih, coadjutor bishop (25 March 1985 – 16 April 1987)
- 2 Metod Pirih (16 April 1987 – 26 May 2012)
  - Jurij Bizjak, auxiliary, titular bishop of Gergis (13 May 2000 – 26 May 2012)
- 3 Jurij Bizjak (since 26 May 2012)

Roman Catholic Diocese of Koper is a diocese of the catholic church of the Catholic Church.^[2]