# SA18 9: postcode sector in Carmarthenshire

8 live postcodes, all in Carmarthenshire.

A postcode has no figures of its own: each layer is published for whole councils, neighbourhoods or exact points. The figures below are for the whole of Carmarthenshire. Open the map at SA18 9 for neighbourhoods and points.

In: [Carmarthenshire](https://openindex.co.uk/carmarthenshire) › [SA18](https://openindex.co.uk/postcode/sa18)

## Key figures

- **Average house price: £195,263** (August 2026). Carmarthenshire’s average house price was £195,263 in August 2026 (HM Land Registry). Up 2.7% in a year. Source: UK House Price Index, August 2026. Published 21 October 2026.
- **Median full-time pay: £37,405** (2025). Full-time workers living in Carmarthenshire earned a median of £37,405 in 2025 (ONS earnings survey). 138th lowest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 5.2×** (2025). A home in Carmarthenshire costs 5.2 times local full-time pay. Joint 53rd most affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 21 October 2026.
- **Population estimate: 190,037** (2025). Carmarthenshire’s population was an estimated 190,037 in mid-2025 (ONS population estimates). Down 0.2% in a year. Source: Mid-year population estimates, 2025. Published 1 October 2026.

## About

- Type: Postcode sector
- Live postcodes: 8
- Council: [Carmarthenshire](https://openindex.co.uk/carmarthenshire)
- Centre: 51.7916, -3.9844

Council: [Carmarthenshire](https://openindex.co.uk/carmarthenshire) (Welsh council, 100%).

## Your MP

- [Caerfyrddin](https://openindex.co.uk/constituency/caerfyrddin): Ann Davies (Plaid Cymru), MP since July 2024.

As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Postcodes in SA18 9

[SA18 9AD](https://openindex.co.uk/postcode/sa18-9ad), [SA18 9AR](https://openindex.co.uk/postcode/sa18-9ar), [SA18 9AU](https://openindex.co.uk/postcode/sa18-9au), [SA18 9AW](https://openindex.co.uk/postcode/sa18-9aw), [SA18 9BD](https://openindex.co.uk/postcode/sa18-9bd), [SA18 9BQ](https://openindex.co.uk/postcode/sa18-9bq), [SA18 9BS](https://openindex.co.uk/postcode/sa18-9bs), [SA18 9BT](https://openindex.co.uk/postcode/sa18-9bt)

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/sa18-9.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/postcode/sa18-9