Carmarthenshire
32 postcode sectors mapped mainly to Carmarthenshire. Choose a district or browse the guides below. These are postcode sectors, not named neighbourhood boundaries.
Postcode districts
Area guides
32 sectors
- SA14 6Near Llannon
- SA14 7Near Cefneithin
- SA14 8Near Llangennech
- SA15 1Near Llanelli
- SA15 3Near Llanelli
- SA15 4Near Llanelli Rural
- SA15 5Near Llanelli Rural
- SA15 9Near Llanelli
- SA17 4Near Trimsaran
- SA17 5Near St. Ishmael
- SA18 1Near Glanamman
- SA18 2Near Ammanford
- SA18 3Near Ammanford
- SA18 9Near Ammanford
- SA19 0Near Manordeilo and Salem
- SA19 6Near Trap
- SA19 7Near Talley
- SA19 8Near Caeo
- SA19 9Near Llangadog
- SA20 0Near Llandovery
- SA31 1Near Carmarthen
- SA31 2Near Carmarthen
- SA31 3Near Carmarthen
- SA31 9Near Llangunnor
- SA32 7Near Llanegwad
- SA32 8Near Llanegwad
- SA33 4Near Laugharne Township
- SA33 5Near Newchurch and Merthyr
- SA33 6Near Cynwyl Elfed
- SA34 0Near Llanboidy
- SA39 9Near Pencader
- SA4 0Near Llanedi
Authority grouping uses mapped sector boundaries from the Office for National Statistics, December 2025. It measures boundary area, not the number of addresses or residents. Guide names describe a place near the approximate sector centre.