Parishes
| Parish Name | Type of Parish | Duration | Notes
| | Crucywel | Parish (ancient), Civil parish | 1894-1974 |
| | Grwyne Fawr | Township, Civil parish | 1894-1974 |
| | Grwynefechan | Township, Civil parish | 1894-1974 |
| | Llanbedr Ystrad Yw | Parish (ancient), Civil parish | 1894-1974 |
| | Llanelli | Chapelry, Civil parish | 1894-1974 |
| | Llanfihangel Cwm Du | Parish (ancient), Civil parish | 1894-1974 |
| | Llangatwg | Parish (ancient), Civil parish | 1894-1974 |
| | Llangenni | Chapelry, Parish (ancient), Civil parish | 1894-1974 |
| | Llangynidr | Parish (ancient), Civil parish | 1894-1974 |
| | Partrishow | Chapelry, Civil parish | 1894-1974 |
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