# SA18 1: postcode sector in Carmarthenshire

227 live postcodes: 124 in Carmarthenshire, 103 in Neath Port Talbot.

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, which holds 55% of SA18 1’s postcodes. Open the map at SA18 1 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: 227
- Councils: [Carmarthenshire](https://openindex.co.uk/carmarthenshire)
- : [Neath Port Talbot](https://openindex.co.uk/neath-port-talbot)
- Centre: 51.7995, -3.8850

Council: [Carmarthenshire](https://openindex.co.uk/carmarthenshire) (Welsh council, 55%).

## Councils

- [Carmarthenshire](https://openindex.co.uk/carmarthenshire): 124 postcodes
- [Neath Port Talbot](https://openindex.co.uk/neath-port-talbot): 103 postcodes

## Your MP

- [Caerfyrddin](https://openindex.co.uk/constituency/caerfyrddin): Ann Davies (Plaid Cymru), MP since July 2024. 55% of the people here.
- [Brecon, Radnor and Cwm Tawe](https://openindex.co.uk/constituency/brecon-radnor-and-cwm-tawe): David Chadwick (Liberal Democrat), MP since July 2024. 45% of the people here.

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

## Postcodes in SA18 1

[SA18 1AB](https://openindex.co.uk/postcode/sa18-1ab), [SA18 1AD](https://openindex.co.uk/postcode/sa18-1ad), [SA18 1AE](https://openindex.co.uk/postcode/sa18-1ae), [SA18 1AF](https://openindex.co.uk/postcode/sa18-1af), [SA18 1AG](https://openindex.co.uk/postcode/sa18-1ag), [SA18 1AH](https://openindex.co.uk/postcode/sa18-1ah), [SA18 1AJ](https://openindex.co.uk/postcode/sa18-1aj), [SA18 1AL](https://openindex.co.uk/postcode/sa18-1al), [SA18 1AN](https://openindex.co.uk/postcode/sa18-1an), [SA18 1AP](https://openindex.co.uk/postcode/sa18-1ap), [SA18 1AQ](https://openindex.co.uk/postcode/sa18-1aq), [SA18 1AR](https://openindex.co.uk/postcode/sa18-1ar), [SA18 1AS](https://openindex.co.uk/postcode/sa18-1as), [SA18 1AT](https://openindex.co.uk/postcode/sa18-1at), [SA18 1AU](https://openindex.co.uk/postcode/sa18-1au), [SA18 1AW](https://openindex.co.uk/postcode/sa18-1aw), [SA18 1AX](https://openindex.co.uk/postcode/sa18-1ax), [SA18 1AY](https://openindex.co.uk/postcode/sa18-1ay), [SA18 1AZ](https://openindex.co.uk/postcode/sa18-1az), [SA18 1BA](https://openindex.co.uk/postcode/sa18-1ba), [SA18 1BB](https://openindex.co.uk/postcode/sa18-1bb), [SA18 1BD](https://openindex.co.uk/postcode/sa18-1bd), [SA18 1BE](https://openindex.co.uk/postcode/sa18-1be), [SA18 1BG](https://openindex.co.uk/postcode/sa18-1bg), [SA18 1BH](https://openindex.co.uk/postcode/sa18-1bh), [SA18 1BJ](https://openindex.co.uk/postcode/sa18-1bj), [SA18 1BL](https://openindex.co.uk/postcode/sa18-1bl), [SA18 1BN](https://openindex.co.uk/postcode/sa18-1bn), [SA18 1BP](https://openindex.co.uk/postcode/sa18-1bp), [SA18 1BQ](https://openindex.co.uk/postcode/sa18-1bq), [SA18 1BR](https://openindex.co.uk/postcode/sa18-1br), [SA18 1BS](https://openindex.co.uk/postcode/sa18-1bs), [SA18 1BT](https://openindex.co.uk/postcode/sa18-1bt), [SA18 1BU](https://openindex.co.uk/postcode/sa18-1bu), [SA18 1BW](https://openindex.co.uk/postcode/sa18-1bw), [SA18 1BX](https://openindex.co.uk/postcode/sa18-1bx), [SA18 1BY](https://openindex.co.uk/postcode/sa18-1by), [SA18 1BZ](https://openindex.co.uk/postcode/sa18-1bz), [SA18 1DA](https://openindex.co.uk/postcode/sa18-1da), [SA18 1DB](https://openindex.co.uk/postcode/sa18-1db), [SA18 1DD](https://openindex.co.uk/postcode/sa18-1dd), [SA18 1DE](https://openindex.co.uk/postcode/sa18-1de), [SA18 1DF](https://openindex.co.uk/postcode/sa18-1df), [SA18 1DG](https://openindex.co.uk/postcode/sa18-1dg), [SA18 1DH](https://openindex.co.uk/postcode/sa18-1dh), [SA18 1DJ](https://openindex.co.uk/postcode/sa18-1dj), [SA18 1DL](https://openindex.co.uk/postcode/sa18-1dl), [SA18 1DN](https://openindex.co.uk/postcode/sa18-1dn), [SA18 1DP](https://openindex.co.uk/postcode/sa18-1dp), [SA18 1DQ](https://openindex.co.uk/postcode/sa18-1dq), [SA18 1DR](https://openindex.co.uk/postcode/sa18-1dr), [SA18 1DS](https://openindex.co.uk/postcode/sa18-1ds), [SA18 1DT](https://openindex.co.uk/postcode/sa18-1dt), [SA18 1DU](https://openindex.co.uk/postcode/sa18-1du), [SA18 1DW](https://openindex.co.uk/postcode/sa18-1dw), [SA18 1DX](https://openindex.co.uk/postcode/sa18-1dx), [SA18 1DY](https://openindex.co.uk/postcode/sa18-1dy), [SA18 1DZ](https://openindex.co.uk/postcode/sa18-1dz), [SA18 1ED](https://openindex.co.uk/postcode/sa18-1ed), [SA18 1EG](https://openindex.co.uk/postcode/sa18-1eg), [SA18 1EH](https://openindex.co.uk/postcode/sa18-1eh), [SA18 1EJ](https://openindex.co.uk/postcode/sa18-1ej), [SA18 1EL](https://openindex.co.uk/postcode/sa18-1el), [SA18 1EN](https://openindex.co.uk/postcode/sa18-1en), [SA18 1EP](https://openindex.co.uk/postcode/sa18-1ep), [SA18 1EQ](https://openindex.co.uk/postcode/sa18-1eq), [SA18 1ER](https://openindex.co.uk/postcode/sa18-1er), [SA18 1ES](https://openindex.co.uk/postcode/sa18-1es), [SA18 1ET](https://openindex.co.uk/postcode/sa18-1et), [SA18 1EW](https://openindex.co.uk/postcode/sa18-1ew), [SA18 1EX](https://openindex.co.uk/postcode/sa18-1ex), [SA18 1EY](https://openindex.co.uk/postcode/sa18-1ey), [SA18 1EZ](https://openindex.co.uk/postcode/sa18-1ez), [SA18 1HA](https://openindex.co.uk/postcode/sa18-1ha), [SA18 1HB](https://openindex.co.uk/postcode/sa18-1hb), [SA18 1HD](https://openindex.co.uk/postcode/sa18-1hd), [SA18 1HE](https://openindex.co.uk/postcode/sa18-1he), [SA18 1HF](https://openindex.co.uk/postcode/sa18-1hf), [SA18 1HG](https://openindex.co.uk/postcode/sa18-1hg), [SA18 1HH](https://openindex.co.uk/postcode/sa18-1hh), [SA18 1HJ](https://openindex.co.uk/postcode/sa18-1hj), [SA18 1HL](https://openindex.co.uk/postcode/sa18-1hl), [SA18 1HN](https://openindex.co.uk/postcode/sa18-1hn), [SA18 1HP](https://openindex.co.uk/postcode/sa18-1hp), [SA18 1HQ](https://openindex.co.uk/postcode/sa18-1hq), [SA18 1HR](https://openindex.co.uk/postcode/sa18-1hr), [SA18 1HS](https://openindex.co.uk/postcode/sa18-1hs), [SA18 1HT](https://openindex.co.uk/postcode/sa18-1ht), [SA18 1HU](https://openindex.co.uk/postcode/sa18-1hu), [SA18 1HW](https://openindex.co.uk/postcode/sa18-1hw), [SA18 1HX](https://openindex.co.uk/postcode/sa18-1hx), [SA18 1HY](https://openindex.co.uk/postcode/sa18-1hy), [SA18 1HZ](https://openindex.co.uk/postcode/sa18-1hz), [SA18 1JA](https://openindex.co.uk/postcode/sa18-1ja), [SA18 1JB](https://openindex.co.uk/postcode/sa18-1jb), [SA18 1JD](https://openindex.co.uk/postcode/sa18-1jd), [SA18 1JE](https://openindex.co.uk/postcode/sa18-1je), [SA18 1JF](https://openindex.co.uk/postcode/sa18-1jf), [SA18 1JG](https://openindex.co.uk/postcode/sa18-1jg), [SA18 1JH](https://openindex.co.uk/postcode/sa18-1jh), [SA18 1JJ](https://openindex.co.uk/postcode/sa18-1jj), [SA18 1JL](https://openindex.co.uk/postcode/sa18-1jl), [SA18 1JN](https://openindex.co.uk/postcode/sa18-1jn), [SA18 1JP](https://openindex.co.uk/postcode/sa18-1jp), [SA18 1JQ](https://openindex.co.uk/postcode/sa18-1jq), [SA18 1JR](https://openindex.co.uk/postcode/sa18-1jr), [SA18 1JS](https://openindex.co.uk/postcode/sa18-1js), [SA18 1JU](https://openindex.co.uk/postcode/sa18-1ju), [SA18 1JW](https://openindex.co.uk/postcode/sa18-1jw), [SA18 1LB](https://openindex.co.uk/postcode/sa18-1lb), [SA18 1LD](https://openindex.co.uk/postcode/sa18-1ld), [SA18 1LE](https://openindex.co.uk/postcode/sa18-1le), [SA18 1LF](https://openindex.co.uk/postcode/sa18-1lf), [SA18 1LG](https://openindex.co.uk/postcode/sa18-1lg), [SA18 1LH](https://openindex.co.uk/postcode/sa18-1lh), [SA18 1LL](https://openindex.co.uk/postcode/sa18-1ll), [SA18 1LN](https://openindex.co.uk/postcode/sa18-1ln), [SA18 1LP](https://openindex.co.uk/postcode/sa18-1lp), [SA18 1LQ](https://openindex.co.uk/postcode/sa18-1lq), [SA18 1LS](https://openindex.co.uk/postcode/sa18-1ls), [SA18 1LU](https://openindex.co.uk/postcode/sa18-1lu), [SA18 1LW](https://openindex.co.uk/postcode/sa18-1lw), [SA18 1LX](https://openindex.co.uk/postcode/sa18-1lx), [SA18 1LY](https://openindex.co.uk/postcode/sa18-1ly), [SA18 1LZ](https://openindex.co.uk/postcode/sa18-1lz), [SA18 1NA](https://openindex.co.uk/postcode/sa18-1na), [SA18 1NB](https://openindex.co.uk/postcode/sa18-1nb), [SA18 1ND](https://openindex.co.uk/postcode/sa18-1nd), [SA18 1NE](https://openindex.co.uk/postcode/sa18-1ne), [SA18 1NF](https://openindex.co.uk/postcode/sa18-1nf), [SA18 1NH](https://openindex.co.uk/postcode/sa18-1nh), [SA18 1NJ](https://openindex.co.uk/postcode/sa18-1nj), [SA18 1NN](https://openindex.co.uk/postcode/sa18-1nn), [SA18 1NP](https://openindex.co.uk/postcode/sa18-1np), [SA18 1NQ](https://openindex.co.uk/postcode/sa18-1nq), [SA18 1NS](https://openindex.co.uk/postcode/sa18-1ns), [SA18 1NT](https://openindex.co.uk/postcode/sa18-1nt), [SA18 1NW](https://openindex.co.uk/postcode/sa18-1nw), [SA18 1NZ](https://openindex.co.uk/postcode/sa18-1nz), [SA18 1PA](https://openindex.co.uk/postcode/sa18-1pa), [SA18 1PB](https://openindex.co.uk/postcode/sa18-1pb), [SA18 1PD](https://openindex.co.uk/postcode/sa18-1pd), [SA18 1PE](https://openindex.co.uk/postcode/sa18-1pe), [SA18 1PF](https://openindex.co.uk/postcode/sa18-1pf), [SA18 1PG](https://openindex.co.uk/postcode/sa18-1pg), [SA18 1PH](https://openindex.co.uk/postcode/sa18-1ph), [SA18 1PL](https://openindex.co.uk/postcode/sa18-1pl), [SA18 1PN](https://openindex.co.uk/postcode/sa18-1pn), [SA18 1PP](https://openindex.co.uk/postcode/sa18-1pp), [SA18 1PR](https://openindex.co.uk/postcode/sa18-1pr), [SA18 1PS](https://openindex.co.uk/postcode/sa18-1ps), [SA18 1PT](https://openindex.co.uk/postcode/sa18-1pt), [SA18 1PU](https://openindex.co.uk/postcode/sa18-1pu), [SA18 1PW](https://openindex.co.uk/postcode/sa18-1pw), [SA18 1PY](https://openindex.co.uk/postcode/sa18-1py), [SA18 1RA](https://openindex.co.uk/postcode/sa18-1ra), [SA18 1RB](https://openindex.co.uk/postcode/sa18-1rb), [SA18 1RD](https://openindex.co.uk/postcode/sa18-1rd), [SA18 1RE](https://openindex.co.uk/postcode/sa18-1re), [SA18 1RF](https://openindex.co.uk/postcode/sa18-1rf), [SA18 1RG](https://openindex.co.uk/postcode/sa18-1rg), [SA18 1RH](https://openindex.co.uk/postcode/sa18-1rh), [SA18 1RL](https://openindex.co.uk/postcode/sa18-1rl), [SA18 1RN](https://openindex.co.uk/postcode/sa18-1rn), [SA18 1RP](https://openindex.co.uk/postcode/sa18-1rp), [SA18 1RR](https://openindex.co.uk/postcode/sa18-1rr), [SA18 1RS](https://openindex.co.uk/postcode/sa18-1rs), [SA18 1RU](https://openindex.co.uk/postcode/sa18-1ru), [SA18 1RW](https://openindex.co.uk/postcode/sa18-1rw), [SA18 1SA](https://openindex.co.uk/postcode/sa18-1sa), [SA18 1SB](https://openindex.co.uk/postcode/sa18-1sb), [SA18 1SD](https://openindex.co.uk/postcode/sa18-1sd), [SA18 1SE](https://openindex.co.uk/postcode/sa18-1se), [SA18 1SF](https://openindex.co.uk/postcode/sa18-1sf), [SA18 1SG](https://openindex.co.uk/postcode/sa18-1sg), [SA18 1SH](https://openindex.co.uk/postcode/sa18-1sh), [SA18 1SJ](https://openindex.co.uk/postcode/sa18-1sj), [SA18 1SL](https://openindex.co.uk/postcode/sa18-1sl), [SA18 1SN](https://openindex.co.uk/postcode/sa18-1sn), [SA18 1SP](https://openindex.co.uk/postcode/sa18-1sp), [SA18 1SR](https://openindex.co.uk/postcode/sa18-1sr), [SA18 1SS](https://openindex.co.uk/postcode/sa18-1ss), [SA18 1ST](https://openindex.co.uk/postcode/sa18-1st), [SA18 1SU](https://openindex.co.uk/postcode/sa18-1su), [SA18 1SW](https://openindex.co.uk/postcode/sa18-1sw), [SA18 1SX](https://openindex.co.uk/postcode/sa18-1sx), [SA18 1SY](https://openindex.co.uk/postcode/sa18-1sy), [SA18 1TA](https://openindex.co.uk/postcode/sa18-1ta), [SA18 1TB](https://openindex.co.uk/postcode/sa18-1tb), [SA18 1TE](https://openindex.co.uk/postcode/sa18-1te), [SA18 1TF](https://openindex.co.uk/postcode/sa18-1tf), [SA18 1TG](https://openindex.co.uk/postcode/sa18-1tg), [SA18 1TL](https://openindex.co.uk/postcode/sa18-1tl), [SA18 1TN](https://openindex.co.uk/postcode/sa18-1tn), [SA18 1TP](https://openindex.co.uk/postcode/sa18-1tp), [SA18 1TR](https://openindex.co.uk/postcode/sa18-1tr), [SA18 1TS](https://openindex.co.uk/postcode/sa18-1ts), [SA18 1TT](https://openindex.co.uk/postcode/sa18-1tt), [SA18 1TU](https://openindex.co.uk/postcode/sa18-1tu), [SA18 1TW](https://openindex.co.uk/postcode/sa18-1tw), [SA18 1TY](https://openindex.co.uk/postcode/sa18-1ty), [SA18 1UF](https://openindex.co.uk/postcode/sa18-1uf), [SA18 1UG](https://openindex.co.uk/postcode/sa18-1ug), [SA18 1UH](https://openindex.co.uk/postcode/sa18-1uh), [SA18 1UN](https://openindex.co.uk/postcode/sa18-1un), [SA18 1UP](https://openindex.co.uk/postcode/sa18-1up), [SA18 1UT](https://openindex.co.uk/postcode/sa18-1ut), [SA18 1UU](https://openindex.co.uk/postcode/sa18-1uu), [SA18 1UW](https://openindex.co.uk/postcode/sa18-1uw), [SA18 1UY](https://openindex.co.uk/postcode/sa18-1uy), [SA18 1XY](https://openindex.co.uk/postcode/sa18-1xy), [SA18 1YA](https://openindex.co.uk/postcode/sa18-1ya), [SA18 1YB](https://openindex.co.uk/postcode/sa18-1yb), [SA18 1YD](https://openindex.co.uk/postcode/sa18-1yd), [SA18 1YE](https://openindex.co.uk/postcode/sa18-1ye), [SA18 1YF](https://openindex.co.uk/postcode/sa18-1yf), [SA18 1YG](https://openindex.co.uk/postcode/sa18-1yg), [SA18 1YH](https://openindex.co.uk/postcode/sa18-1yh), [SA18 1YL](https://openindex.co.uk/postcode/sa18-1yl), [SA18 1YN](https://openindex.co.uk/postcode/sa18-1yn), [SA18 1YP](https://openindex.co.uk/postcode/sa18-1yp), [SA18 1YR](https://openindex.co.uk/postcode/sa18-1yr), [SA18 1YS](https://openindex.co.uk/postcode/sa18-1ys), [SA18 1YT](https://openindex.co.uk/postcode/sa18-1yt), [SA18 1YU](https://openindex.co.uk/postcode/sa18-1yu), [SA18 1YW](https://openindex.co.uk/postcode/sa18-1yw), [SA18 1YY](https://openindex.co.uk/postcode/sa18-1yy)

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/sa18-1.

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/sa18-1