Carmarthenshire Postcodes County

Carmarthenshire is a largely rural county in south west Wales, known for its wide landscapes, agricultural traditions and strong Welsh identity. The county stretches from the coast along Carmarthen Bay inland to rolling hills and upland areas, creating a varied and often peaceful setting. Much of the area remains shaped by farming, with open fields, small villages and market towns forming the backbone of local life.

The county town of Carmarthen has long been an important centre for trade, administration and culture in the region. Elsewhere, towns such as Llanelli, Ammanford and Llandeilo support surrounding rural communities and local industries. While agriculture remains significant, Carmarthenshire also has a history of mining and industry, particularly in its eastern areas, which continues to influence settlement patterns and community ties.

Carmarthenshire is especially valued for its natural features, including rivers, woodland and sections of the Brecon Beacons along its eastern edge. The coastline and countryside offer space for walking, cycling and quiet outdoor activity throughout the year. Taken together, Carmarthenshire provides a calm blend of rural landscape, historic towns and enduring cultural character, giving it a steady and distinctive place within Wales.

9,607
Postcodes
20
Districts
277,888
Population
Wales
Country

Postcode districts in Carmarthenshire

DistrictPost townPostcodesPopulation
SA4 Swansea 1,132 45,024
SA15 Llanelli 1,013 36,605
SA14 Llanelli 871 33,596
SA19 Llandeilo, Llangadog, Llanwrda 830 10,071
SA18 Ammanford 774 29,078
SA44 Llandysul 665 15,435
SA33 Carmarthen 635 12,782
SA31 Carmarthen 583 17,260
SA9 Swansea 552 17,763
SA17 Ferryside, Kidwelly 425 12,792
SA32 Carmarthen 399 8,594
SA48 Aberaeron, Lampeter 381 9,457
SA16 Burry Port 259 8,211
SA20 Llandovery 237 2,595
SA34 Whitland 232 4,478
SA38 Newcastle Emlyn 191 3,889
SA66 Clynderwen 162 3,100
SA39 Pencader 117 2,780
SA40 Llanybydder 106 2,924
SA35 Llanfyrnach 43 1,454

Frequently asked questions

How many postcodes are in Carmarthenshire?

There are approximately 9,607 postcodes in Carmarthenshire.

How many postcode districts are in Carmarthenshire?

Carmarthenshire contains 20 postcode districts.

What is the population of Carmarthenshire?

The postcode districts in Carmarthenshire have a combined population of about 277,888.