| Parish Name | Type of Parish | Duration | Notes
|
| Llanddaniel Fab | Chapelry, Parish (ancient), Civil parish | 1894-1974 |
|
| Llanddona | Parish (ancient), Civil parish | 1894-1974 |
|
| Llandegfan | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanedwen | Chapelry, Civil parish | 1894-1974 |
|
| Llanfairpwllgwyngyll | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanffinan | Chapelry, Civil parish | 1894-1933 |
|
| Llanfihangel Tyn Sylwy | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanfihangel Ysgeifiog | Parish (ancient), Civil parish | 1894-1974 |
|
| Llangadwaladr | Parish (ancient), Civil parish | 1894-1974 |
|
| Llangoed | Chapelry, Parish (ancient), Civil parish | 1894-1974 |
|
| Llangristiolus | Parish (ancient), Civil parish | 1894-1974 |
|
| Llaniestyn Rural (parish) | Civil parish | 1894-1974 |
|
| Llansadwrn | Parish (ancient), Civil parish | 1894-1974 |
|
| Penmon | Chapelry, Parish (ancient), Civil parish | 1894-1974 |
|
| Penmynydd | Parish (ancient), Civil parish | 1894-1974 |
|
| Pentraeth | Chapelry, Parish (ancient), Civil parish | 1894-1974 |
|
| Priestholm | Extra parochial area, Chapelry | 1894-1974 |
|
| Trefdraeth | Parish (ancient), Civil parish | 1894-1974 |
|
| Llanfair Cwmmwd | Chapelry, Civil parish | 1933-1974 |
|
| Llangaffo | Parish (ancient), Civil parish | 1933-1974 | from Dwyran Rural District
|
| Llangeinwen | Parish (ancient), Civil parish | 1933-1974 | from Dwyran Rural District
|
| Llanidan | Parish (ancient), Civil parish | 1933-1974 | from Dwyran Rural District
|
| Newborough | Parish (ancient), Civil parish | 1933-1974 | from Dwyran Rural District
|
