Changes in Ecclesiastical Jurisdictions in South Korea

Date	Change
1831.09.09	Apostolic Vicariate of Korea 조선 was established (from Diocese of Beijing 北京)
1911.04.08	Apostolic Vicariate of Korea 조선 was renamed as Apostolic Vicariate of Seoul 서울 (lost territory to establish Apostolic Vicariate of Taiku 대구)
1911.04.08	Apostolic Vicariate of Taiku 대구 was established (from Apostolic Vicariate of Korea 조선)
1937.04.13	Apostolic Prefecture of Kwoszu was established (from Apostolic Vicariate of Taiku 대구)
1937.04.13	Apostolic Prefecture of Zenshu was established (from Apostolic Vicariate of Taiku 대구)
1939.04.25	Apostolic Prefecture of Shunsen was established (from Apostolic Vicariate of Seoul 서울)
1950.07.12	Apostolic Prefecture of Kwoszu was renamed as Apostolic Prefecture of Gwangju 광주
1950.07.12	Apostolic Prefecture of Zenshu was renamed as Apostolic Prefecture of Jeonju 전주
1950.07.12	Apostolic Vicariate of Seoul 서울 was renamed as Apostolic Vicariate of Seul 서울
1950.07.16	Apostolic Prefecture of Shunsen was renamed as Apostolic Prefecture of Chunchon 춘천
1955.09.20	Apostolic Prefecture of Chunchon 춘천 was promoted as Apostolic Vicariate of Chunchon 춘천
1957.01.21	Apostolic Vicariate of Busan 부산 was established (from Apostolic Vicariate of Taiku 대구)
1957.01.21	Apostolic Prefecture of Gwangju 광주 was promoted as Apostolic Vicariate of Gwangju 광주
1957.01.26	Apostolic Prefecture of Jeonju 전주 was promoted as Apostolic Vicariate of Jeonju 전주
1958.06.23	Apostolic Vicariate of Cheongju 청주 was established (from Apostolic Vicariate of Seul 서울)
1958.06.23	Apostolic Vicariate of Daijeon was established (from Apostolic Vicariate of Seul 서울)
1961.06.06	Apostolic Vicariate of Incheon 인천 was established (from Apostolic Vicariate of Seul 서울)
1962.03.10	Apostolic Vicariate of Busan 부산 was promoted as Diocese of Busan 부산 (became suffragan of Daegu 대구)
1962.03.10	Apostolic Vicariate of Cheongju 청주 was promoted as Diocese of Cheongju 청주 (became suffragan of Daegu 대구)
1962.03.10	Apostolic Vicariate of Chunchon 춘천 was promoted as Diocese of Chunchon 춘천 (became suffragan of Seoul 서울)
1962.03.10	Apostolic Vicariate of Taiku 대구 was promoted as Metropolitan Archdiocese of Daegu 대구 (with suffragan sees Busan 부산 and Cheongju 청주)
1962.03.10	Apostolic Vicariate of Daijeon was promoted as Diocese of Daejeon 대전 (became suffragan of Seoul 서울)
1962.03.10	Apostolic Vicariate of Gwangju 광주 was promoted as Metropolitan Archdiocese of Gwangju 광주 (with suffragan see Jeonju 전주)
1962.03.10	Apostolic Vicariate of Incheon 인천 was promoted as Diocese of Incheon 인천 (became suffragan of Seoul 서울)
1962.03.10	Apostolic Vicariate of Jeonju 전주 was promoted as Diocese of Jeonju 전주 (became suffragan of Gwangju 광주)
1962.03.10	Apostolic Vicariate of Seul 서울 was promoted as Metropolitan Archdiocese of Seoul 서울 (with suffragan sees Chunchon 춘천, Daejeon 대전, Hamhung 함흥, Incheon 인천 and Pyong-yang 평양)
1963.10.07	Diocese of Suwon 수원 was established (from Metropolitan Archdiocese of Seoul 서울 and became suffragan of Seoul 서울)
1965.03.22	Diocese of Wonju 원주 was established (from Diocese of Chunchon 춘천 and became suffragan of Seoul 서울)
1966.02.15	Diocese of Masan 마산 was established (from Diocese of Busan 부산 and became suffragan of Daegu 대구)
1969.05.29	Diocese of Andong 안동 was established (from Metropolitan Archdiocese of Daegu 대구 and Diocese of Wonju 원주 and became suffragan of Daegu 대구)
1971.06.28	Apostolic Prefecture of Cheju 제주 was established (from Metropolitan Archdiocese of Gwangju 광주 and became suffragan of Gwangju 광주)
1977.03.21	Apostolic Prefecture of Cheju 제주 was promoted as Diocese of Cheju 제주
1983.11.22	Military Vicariate of South Korea was established
1986.07.21	Military Vicariate of South Korea was promoted as Military Ordinariate of Military Ordinariate of South Korea
2004.06.24	Diocese of Uijeongbu 의정부 was established (from Metropolitan Archdiocese of Seoul 서울 and became suffragan of Seoul 서울)
2021.06.09	Diocese of Chunchon 춘천 was renamed as Diocese of Chuncheon 춘천
2021.06.09	Diocese of Cheju 제주 was renamed as Diocese of Jeju 제주