The Province of Armagh contains Ten Dioceses*.
663 Parishes, 446 Churches.
| †16 Abpk. of Armagh | 11 Bpk. of Raphoe | |
| 23 Bpk. of Dromore | 9 —— of Clogher | |
| 7 —— of Down ) | 12 —— of Kilmor | |
| —— of Connor) united. | 22 —— of Ardagh‡ | |
| 6 —— of Derry | 5 —— of Meath |
The Province of Dublin contains Five Dioceses.
658 Parishes, 217 Churches.
| 15 Abpk. of Dublin | 3 Bpk. of Ferns ) | |
| 21 Bpk. of Kildare | —— of Leighlin ) united. | |
| 20 —— of Ossory |
The Province of Cashel contains Eleven Dioceses.
839 Parishes, 254 Churches.
| 17 Abpk. of Cashel) | 8 Bpk. of Cloyne | |
| Bpk. of Emly ) united. | 2 —— of Limerick) | |
| 19 —— of Waterford) | —— of Ardfert ) united. | |
| —— of Lismore ) united. | and Aghadoe) | |
| 14 —— of Cork) | 4 —— of Killaloe ) | |
| —— of Ross) united. | —— of Kilfenora) united. |
The Province of Tuam contains Six Dioceses.