| Year | From | To | ||
|---|---|---|---|---|
| 1876 | Diocese of Pittsburgh, Pennsylvania, USA | Territory Lost | Diocese of Allegheny, Pennsylvania, USA (Counties of Huntingdon, Blair, Bedford, Cambria, Indiana, Westmorland, Butler, Armstrong, and part of Allegheny) | Erected |
| 1887 | Vicariate Apostolic of Tanganyika, Tanzania | Territory Lost | Vicariate Apostolic of Upper Congo {Congo Superiore}, Congo (Dem. Rep.)
Vicariate Apostolic of Unianyembé, Tanzania ((or 30 Dec 1886)) | Erected |
| 1918 | Archdiocese of New Orleans, Louisiana, USA (Southwest Louisiana (between the Atchafalaya and Sabine Rivers)) | Territory Lost | Diocese of Lafayette, Louisiana, USA | Erected |
| 1926 | Vicariate Apostolic of Ouagadougou, Burkina Faso (Media Valley) | Territory Lost | Prefecture Apostolic of Navrongo, Ghana | Erected |
| 1930 | Delegation to Africa for the Missions | Established | ||
| 1932 | Prefecture Apostolic of Chaohsien [Zhaoxian], China | Elevated | Vicariate Apostolic of Chaohsien [Zhaoxian], China | Elevated |
| 1936 | Diocese of Pinsk, Belarus (Wodzld, Sciony, and Kiewlahi) | Territory Lost | Diocese of Łomża, Poland | Territory Added |
| 1946 | Diocese of Cajamarca, Peru
Diocese of Chachapoyas, Peru Vicariate Apostolic of San Gabriel de la Dolorosa del Marańón, Peru | Territory Lost | Prefecture Apostolic of San Francisco Javier, Peru | Erected |
| 1946 | Vicariate Apostolic of Tabora, Tanzania (Shinyanga) | Territory Lost | Vicariate Apostolic of Mwanza, Tanzania | Territory Added |
| 1951 | Vicariate Apostolic of Aliwal, South Africa | Elevated | Diocese of Aliwal, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Bethlehem, South Africa | Elevated | Diocese of Bethlehem, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Aliwal, South Africa (Fauresmith, Philippolis, Smithfield, Edenburg, Trompsburg, and Zastron)
Vicariate Apostolic of Kimberley in South Africa {nell’Africa Meridionale} (Bloemfontein, Thabunch, Wetsdorp, Jacobsdal, Boshof, Wepener, Redderburg, and parts of Ladybrand and Hoopstad) | Territory Lost | Archdiocese of Bloemfontein, South Africa | Erected |
| 1951 | Vicariate Apostolic of Cape Town, South Africa | Elevated | Archdiocese of Cape Town {Kaapstad}, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Natal, South Africa | Elevated | Archdiocese of Durban, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Eshowe, South Africa | Elevated | Diocese of Eshowe, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Johannesburg, South Africa | Elevated | Diocese of Johannesburg, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Keimoes, South Africa | Elevated | Diocese of Keimoes, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Kimberley in South Africa {nell’Africa Meridionale} | Elevated | Diocese of Kimberley, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Kokstad, South Africa | Elevated | Diocese of Kokstad, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Kroonstad, South Africa | Elevated | Diocese of Kroonstad, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Swaziland | Elevated | Diocese of Bremersdorp, eSwatini | Elevated |
| 1951 | Vicariate Apostolic of Mariannhill, South Africa | Elevated | Diocese of Mariannhill, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Basutoland, Lesotho | Elevated | Diocese of Maseru, Lesotho | Elevated |
| 1951 | Vicariate Apostolic of Oudtshoorn, South Africa | Elevated | Diocese of Oudtshoorn, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Port Elizabeth, South Africa | Elevated | Diocese of Port Elizabeth, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Pretoria, South Africa | Elevated | Archdiocese of Pretoria, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Queenstown, South Africa | Elevated | Diocese of Queenstown, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Umtata, South Africa | Elevated | Diocese of Umtata, South Africa | Elevated |
| 1951 | Vicariate Apostolic of Lydenburg, South Africa | Elevated | Diocese of Lydenburg, South Africa | Elevated |
| 1965 | Prefecture Apostolic of Bhagalpur, India | Elevated | Diocese of Bhagalpur, India | Elevated |
| 1966 | Diocese of Jamshedpur, India (Anandpur and Bandgaon) | Territory Lost | Archdiocese of Ranchi, India | Territory Added |
| 1968 | Prefecture Apostolic of Bafia, Cameroon | Elevated | Diocese of Bafia, Cameroon | Elevated |
| 1968 | Diocese of Eldoret, Kenya (Turkana) | Territory Lost | Prefecture Apostolic of Lodwar, Kenya | Erected |
| 1968 | Diocese of Eldoret, Kenya
Diocese of Kisumu, Kenya Archdiocese of Nairobi, Kenya | Territory Lost | Diocese of Nakuru, Kenya (Districts of Nakuru and Kericho) | Erected |
| 1982 | Apostolic Exarchate of United States of America (Chaldean) | Erected | ||
| 1996 | Diocese of Silchar, India (Tripura) | Territory Lost | Diocese of Agartala, India | Erected |
| 1996 | Diocese of Silchar, India | Name Changed | Diocese of Aizawl, India | Name Changed |
| 2001 | Eparchy of Križevci (Kreutz) (Križevci), Croatia (Macedonia) | Territory Lost | Apostolic Exarchate of Macedonia (Macedonian) | Erected |
| 2002 | Archiepiscopal Exarchate of Kyiv-Vyshhorod (Ukrainian), Ukraine | Territory Lost | Archiepiscopal Exarchate of Donets’k-Kharkiv (Ukrainian), Ukraine | Erected |
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