Changes in Ecclesiastical Jurisdictions in North 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)
1920.08.05	Apostolic Vicariate of Wonsan 원산 was established (from Apostolic Vicariate of Seoul 서울)
1927.03.17	Apostolic Prefecture of Hpyeng-yang was established (from Apostolic Vicariate of Seoul 서울)
1929.03.17	Apostolic Prefecture of Hpyeng-yang was renamed as Apostolic Prefecture of Peng-yang
1939.04.25	Apostolic Prefecture of Shunsen was established (from Apostolic Vicariate of Seoul 서울)
1939.07.11	Apostolic Prefecture of Peng-yang was promoted as Apostolic Vicariate of Heijo
1940.01.12	Apostolic Vicariate of Wonsan 원산 was renamed as Apostolic Vicariate of Kanko (lost territory to establish Territorial Abbacy of Tŏkugen)
1940.01.12	Territorial Abbacy of Tŏkugen was established (from Apostolic Vicariate of Wonsan 원산)
1950.07.12	Apostolic Vicariate of Kanko was renamed as Apostolic Vicariate of Hamhung 함흥
1950.07.12	Apostolic Vicariate of Heijo was renamed as Apostolic Vicariate of Pyong-Yang 평양
1950.07.12	Territorial Abbacy of Tŏkugen was renamed as Territorial Abbacy of Tŏkwon 덕원
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
1962.03.10	Apostolic Vicariate of Hamhung 함흥 was promoted as Diocese of Hamhung 함흥 (became suffragan of Seoul 서울)
1962.03.10	Apostolic Vicariate of Pyong-Yang 평양 was promoted as Diocese of Pyong-yang 평양 (became suffragan of Seoul 서울)
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 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)
2021.06.09	Diocese of Chunchon 춘천 was renamed as Diocese of Chuncheon 춘천