 | 1829 | 1830 | 1831 |  |
Date | Country | Change |
| 1830 |  Armenia | Titular Episcopal See of Etchmiadzin was suppressed |
| 1830 |  Belgium | Diocese of Tournai exchanged territory with Diocese of Cambrai |
| 1830 |  France | Diocese of Cambrai exchanged territory with Diocese of Tournai |
| 1830 |  Turkiye | Apostolic Vicariate of Istanbul (Armenian Rite) was promoted as Archdiocese of Istanbul |
| 1830.01.10 |  New Zealand | Apostolic Prefecture of South Seas Islands was established (from Apostolic Prefecture of Bourbon) |
| 1830.07.27 |  Italy | Diocese of Gorizia e Gradisca was promoted as Metropolitan Archdiocese of Gorizia e Gradisca (with suffragan sees Koper, Krk, Ljubljana, Poreč i Pula and Trieste) |
© 2026 GCatholic.org
|
