| Parish Name | Type of Parish | Duration | Notes
|
| Aberwheeler | Township, Parish (ancient), Civil parish | 1894-1974 |
|
| Bryneglwys | Parish (ancient), Civil parish | 1894-1974 |
|
| Clocaenog | Parish (ancient), Civil parish | 1894-1974 |
|
| Derwen | Parish (ancient), Civil parish | 1894-1974 |
|
| Efenechtid | Parish (ancient), Civil parish | 1894-1974 |
|
| Gyffylliog | Parish (ancient), Civil parish | 1894-1974 | also known as Y Gyffylliog
|
| Llanarmon yn Iâl | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanbedr | Civil parish | 1935-1974 |
|
| Llanbedr Dyffryn Clwyd | Parish (ancient), Civil parish | 1894-1974 |
|
| Llandegla | Parish (ancient), Civil parish | 1894-1974 |
|
| Llandyrnog | Parish (ancient), Civil parish | 1894-1974 |
|
| Llandyrnog Rural | Civil parish | 1894-1974 |
|
| Llanelidan | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanfair Dyffryn Clwyd | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanfair Dyffryn Clwyd Rural | Civil parish | 1894-1974 |
|
| Llanferres | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanfwrog | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanfwrog Rural | Civil parish | 1894-1974 |
|
| Llangwyfan | Parish (ancient), Civil parish | 1894-1974 |
|
| Llangynhafal | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanhychan | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanrhaeadr yng Nghinmeirch | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanrhydd | Civil parish | 1894-1974 | also known as Llan Rhudd
|
| Llanrhydd Rural | Civil parish | 1894-1935 |
|
| Llanynys | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanynys Rural | Civil parish | 1894-1974 |
|
| Nantglyn | Parish (ancient), Civil parish | 1894-1974 |
|
| Ruthin Rural (parish) | Civil parish | 1894-1974 |
|
