# SA18 3: postcode sector in Carmarthenshire

262 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 3 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: 262
- Council: [Carmarthenshire](https://openindex.co.uk/carmarthenshire)
- Centre: 51.7957, -4.0150

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. 82% of the people here.
- [Llanelli](https://openindex.co.uk/constituency/llanelli): Dame Nia Griffith (Labour), MP since July 2024. 18% 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 3

[SA18 3AB](https://openindex.co.uk/postcode/sa18-3ab), [SA18 3AF](https://openindex.co.uk/postcode/sa18-3af), [SA18 3AG](https://openindex.co.uk/postcode/sa18-3ag), [SA18 3AJ](https://openindex.co.uk/postcode/sa18-3aj), [SA18 3AL](https://openindex.co.uk/postcode/sa18-3al), [SA18 3AN](https://openindex.co.uk/postcode/sa18-3an), [SA18 3AP](https://openindex.co.uk/postcode/sa18-3ap), [SA18 3AQ](https://openindex.co.uk/postcode/sa18-3aq), [SA18 3AR](https://openindex.co.uk/postcode/sa18-3ar), [SA18 3AS](https://openindex.co.uk/postcode/sa18-3as), [SA18 3AT](https://openindex.co.uk/postcode/sa18-3at), [SA18 3AU](https://openindex.co.uk/postcode/sa18-3au), [SA18 3AW](https://openindex.co.uk/postcode/sa18-3aw), [SA18 3AX](https://openindex.co.uk/postcode/sa18-3ax), [SA18 3AY](https://openindex.co.uk/postcode/sa18-3ay), [SA18 3AZ](https://openindex.co.uk/postcode/sa18-3az), [SA18 3BA](https://openindex.co.uk/postcode/sa18-3ba), [SA18 3BB](https://openindex.co.uk/postcode/sa18-3bb), [SA18 3BD](https://openindex.co.uk/postcode/sa18-3bd), [SA18 3BG](https://openindex.co.uk/postcode/sa18-3bg), [SA18 3BH](https://openindex.co.uk/postcode/sa18-3bh), [SA18 3BJ](https://openindex.co.uk/postcode/sa18-3bj), [SA18 3BL](https://openindex.co.uk/postcode/sa18-3bl), [SA18 3BN](https://openindex.co.uk/postcode/sa18-3bn), [SA18 3BQ](https://openindex.co.uk/postcode/sa18-3bq), [SA18 3BS](https://openindex.co.uk/postcode/sa18-3bs), [SA18 3BU](https://openindex.co.uk/postcode/sa18-3bu), [SA18 3BW](https://openindex.co.uk/postcode/sa18-3bw), [SA18 3BX](https://openindex.co.uk/postcode/sa18-3bx), [SA18 3BY](https://openindex.co.uk/postcode/sa18-3by), [SA18 3BZ](https://openindex.co.uk/postcode/sa18-3bz), [SA18 3DA](https://openindex.co.uk/postcode/sa18-3da), [SA18 3DB](https://openindex.co.uk/postcode/sa18-3db), [SA18 3DD](https://openindex.co.uk/postcode/sa18-3dd), [SA18 3DE](https://openindex.co.uk/postcode/sa18-3de), [SA18 3DJ](https://openindex.co.uk/postcode/sa18-3dj), [SA18 3DL](https://openindex.co.uk/postcode/sa18-3dl), [SA18 3DN](https://openindex.co.uk/postcode/sa18-3dn), [SA18 3DQ](https://openindex.co.uk/postcode/sa18-3dq), [SA18 3DR](https://openindex.co.uk/postcode/sa18-3dr), [SA18 3DS](https://openindex.co.uk/postcode/sa18-3ds), [SA18 3DT](https://openindex.co.uk/postcode/sa18-3dt), [SA18 3DU](https://openindex.co.uk/postcode/sa18-3du), [SA18 3DW](https://openindex.co.uk/postcode/sa18-3dw), [SA18 3DX](https://openindex.co.uk/postcode/sa18-3dx), [SA18 3DY](https://openindex.co.uk/postcode/sa18-3dy), [SA18 3DZ](https://openindex.co.uk/postcode/sa18-3dz), [SA18 3EA](https://openindex.co.uk/postcode/sa18-3ea), [SA18 3EB](https://openindex.co.uk/postcode/sa18-3eb), [SA18 3ED](https://openindex.co.uk/postcode/sa18-3ed), [SA18 3EE](https://openindex.co.uk/postcode/sa18-3ee), [SA18 3EF](https://openindex.co.uk/postcode/sa18-3ef), [SA18 3EG](https://openindex.co.uk/postcode/sa18-3eg), [SA18 3EH](https://openindex.co.uk/postcode/sa18-3eh), [SA18 3EJ](https://openindex.co.uk/postcode/sa18-3ej), [SA18 3EL](https://openindex.co.uk/postcode/sa18-3el), [SA18 3EN](https://openindex.co.uk/postcode/sa18-3en), [SA18 3EQ](https://openindex.co.uk/postcode/sa18-3eq), [SA18 3ER](https://openindex.co.uk/postcode/sa18-3er), [SA18 3ES](https://openindex.co.uk/postcode/sa18-3es), [SA18 3EX](https://openindex.co.uk/postcode/sa18-3ex), [SA18 3EY](https://openindex.co.uk/postcode/sa18-3ey), [SA18 3EZ](https://openindex.co.uk/postcode/sa18-3ez), [SA18 3FA](https://openindex.co.uk/postcode/sa18-3fa), [SA18 3FB](https://openindex.co.uk/postcode/sa18-3fb), [SA18 3FD](https://openindex.co.uk/postcode/sa18-3fd), [SA18 3FE](https://openindex.co.uk/postcode/sa18-3fe), [SA18 3GA](https://openindex.co.uk/postcode/sa18-3ga), [SA18 3GL](https://openindex.co.uk/postcode/sa18-3gl), [SA18 3GY](https://openindex.co.uk/postcode/sa18-3gy), [SA18 3HA](https://openindex.co.uk/postcode/sa18-3ha), [SA18 3HB](https://openindex.co.uk/postcode/sa18-3hb), [SA18 3HD](https://openindex.co.uk/postcode/sa18-3hd), [SA18 3HE](https://openindex.co.uk/postcode/sa18-3he), [SA18 3HF](https://openindex.co.uk/postcode/sa18-3hf), [SA18 3HG](https://openindex.co.uk/postcode/sa18-3hg), [SA18 3HH](https://openindex.co.uk/postcode/sa18-3hh), [SA18 3HJ](https://openindex.co.uk/postcode/sa18-3hj), [SA18 3HL](https://openindex.co.uk/postcode/sa18-3hl), [SA18 3HN](https://openindex.co.uk/postcode/sa18-3hn), [SA18 3HP](https://openindex.co.uk/postcode/sa18-3hp), [SA18 3HS](https://openindex.co.uk/postcode/sa18-3hs), [SA18 3HW](https://openindex.co.uk/postcode/sa18-3hw), [SA18 3HX](https://openindex.co.uk/postcode/sa18-3hx), [SA18 3HY](https://openindex.co.uk/postcode/sa18-3hy), [SA18 3HZ](https://openindex.co.uk/postcode/sa18-3hz), [SA18 3JA](https://openindex.co.uk/postcode/sa18-3ja), [SA18 3JB](https://openindex.co.uk/postcode/sa18-3jb), [SA18 3JD](https://openindex.co.uk/postcode/sa18-3jd), [SA18 3JF](https://openindex.co.uk/postcode/sa18-3jf), [SA18 3JG](https://openindex.co.uk/postcode/sa18-3jg), [SA18 3JH](https://openindex.co.uk/postcode/sa18-3jh), [SA18 3JJ](https://openindex.co.uk/postcode/sa18-3jj), [SA18 3JL](https://openindex.co.uk/postcode/sa18-3jl), [SA18 3JN](https://openindex.co.uk/postcode/sa18-3jn), [SA18 3JP](https://openindex.co.uk/postcode/sa18-3jp), [SA18 3JQ](https://openindex.co.uk/postcode/sa18-3jq), [SA18 3JR](https://openindex.co.uk/postcode/sa18-3jr), [SA18 3JS](https://openindex.co.uk/postcode/sa18-3js), [SA18 3JT](https://openindex.co.uk/postcode/sa18-3jt), [SA18 3JU](https://openindex.co.uk/postcode/sa18-3ju), [SA18 3JW](https://openindex.co.uk/postcode/sa18-3jw), [SA18 3JX](https://openindex.co.uk/postcode/sa18-3jx), [SA18 3JY](https://openindex.co.uk/postcode/sa18-3jy), [SA18 3JZ](https://openindex.co.uk/postcode/sa18-3jz), [SA18 3LA](https://openindex.co.uk/postcode/sa18-3la), [SA18 3LB](https://openindex.co.uk/postcode/sa18-3lb), [SA18 3LD](https://openindex.co.uk/postcode/sa18-3ld), [SA18 3LE](https://openindex.co.uk/postcode/sa18-3le), [SA18 3LF](https://openindex.co.uk/postcode/sa18-3lf), [SA18 3LG](https://openindex.co.uk/postcode/sa18-3lg), [SA18 3LH](https://openindex.co.uk/postcode/sa18-3lh), [SA18 3LJ](https://openindex.co.uk/postcode/sa18-3lj), [SA18 3LL](https://openindex.co.uk/postcode/sa18-3ll), [SA18 3LN](https://openindex.co.uk/postcode/sa18-3ln), [SA18 3LP](https://openindex.co.uk/postcode/sa18-3lp), [SA18 3LQ](https://openindex.co.uk/postcode/sa18-3lq), [SA18 3LR](https://openindex.co.uk/postcode/sa18-3lr), [SA18 3LW](https://openindex.co.uk/postcode/sa18-3lw), [SA18 3LX](https://openindex.co.uk/postcode/sa18-3lx), [SA18 3LY](https://openindex.co.uk/postcode/sa18-3ly), [SA18 3LZ](https://openindex.co.uk/postcode/sa18-3lz), [SA18 3NA](https://openindex.co.uk/postcode/sa18-3na), [SA18 3NB](https://openindex.co.uk/postcode/sa18-3nb), [SA18 3ND](https://openindex.co.uk/postcode/sa18-3nd), [SA18 3NE](https://openindex.co.uk/postcode/sa18-3ne), [SA18 3NF](https://openindex.co.uk/postcode/sa18-3nf), [SA18 3NG](https://openindex.co.uk/postcode/sa18-3ng), [SA18 3NH](https://openindex.co.uk/postcode/sa18-3nh), [SA18 3NJ](https://openindex.co.uk/postcode/sa18-3nj), [SA18 3NL](https://openindex.co.uk/postcode/sa18-3nl), [SA18 3NN](https://openindex.co.uk/postcode/sa18-3nn), [SA18 3NP](https://openindex.co.uk/postcode/sa18-3np), [SA18 3NQ](https://openindex.co.uk/postcode/sa18-3nq), [SA18 3NR](https://openindex.co.uk/postcode/sa18-3nr), [SA18 3NS](https://openindex.co.uk/postcode/sa18-3ns), [SA18 3NT](https://openindex.co.uk/postcode/sa18-3nt), [SA18 3NW](https://openindex.co.uk/postcode/sa18-3nw), [SA18 3NX](https://openindex.co.uk/postcode/sa18-3nx), [SA18 3NY](https://openindex.co.uk/postcode/sa18-3ny), [SA18 3NZ](https://openindex.co.uk/postcode/sa18-3nz), [SA18 3PA](https://openindex.co.uk/postcode/sa18-3pa), [SA18 3PB](https://openindex.co.uk/postcode/sa18-3pb), [SA18 3PD](https://openindex.co.uk/postcode/sa18-3pd), [SA18 3PE](https://openindex.co.uk/postcode/sa18-3pe), [SA18 3PF](https://openindex.co.uk/postcode/sa18-3pf), [SA18 3PG](https://openindex.co.uk/postcode/sa18-3pg), [SA18 3PH](https://openindex.co.uk/postcode/sa18-3ph), [SA18 3PJ](https://openindex.co.uk/postcode/sa18-3pj), [SA18 3PL](https://openindex.co.uk/postcode/sa18-3pl), [SA18 3PN](https://openindex.co.uk/postcode/sa18-3pn), [SA18 3PP](https://openindex.co.uk/postcode/sa18-3pp), [SA18 3PQ](https://openindex.co.uk/postcode/sa18-3pq), [SA18 3PR](https://openindex.co.uk/postcode/sa18-3pr), [SA18 3PS](https://openindex.co.uk/postcode/sa18-3ps), [SA18 3PT](https://openindex.co.uk/postcode/sa18-3pt), [SA18 3PU](https://openindex.co.uk/postcode/sa18-3pu), [SA18 3PW](https://openindex.co.uk/postcode/sa18-3pw), [SA18 3PY](https://openindex.co.uk/postcode/sa18-3py), [SA18 3QA](https://openindex.co.uk/postcode/sa18-3qa), [SA18 3QB](https://openindex.co.uk/postcode/sa18-3qb), [SA18 3QD](https://openindex.co.uk/postcode/sa18-3qd), [SA18 3QE](https://openindex.co.uk/postcode/sa18-3qe), [SA18 3QF](https://openindex.co.uk/postcode/sa18-3qf), [SA18 3QG](https://openindex.co.uk/postcode/sa18-3qg), [SA18 3QH](https://openindex.co.uk/postcode/sa18-3qh), [SA18 3QJ](https://openindex.co.uk/postcode/sa18-3qj), [SA18 3QL](https://openindex.co.uk/postcode/sa18-3ql), [SA18 3QN](https://openindex.co.uk/postcode/sa18-3qn), [SA18 3QP](https://openindex.co.uk/postcode/sa18-3qp), [SA18 3QQ](https://openindex.co.uk/postcode/sa18-3qq), [SA18 3QR](https://openindex.co.uk/postcode/sa18-3qr), [SA18 3QS](https://openindex.co.uk/postcode/sa18-3qs), [SA18 3QT](https://openindex.co.uk/postcode/sa18-3qt), [SA18 3QU](https://openindex.co.uk/postcode/sa18-3qu), [SA18 3QW](https://openindex.co.uk/postcode/sa18-3qw), [SA18 3QX](https://openindex.co.uk/postcode/sa18-3qx), [SA18 3QZ](https://openindex.co.uk/postcode/sa18-3qz), [SA18 3RA](https://openindex.co.uk/postcode/sa18-3ra), [SA18 3RB](https://openindex.co.uk/postcode/sa18-3rb), [SA18 3RD](https://openindex.co.uk/postcode/sa18-3rd), [SA18 3RE](https://openindex.co.uk/postcode/sa18-3re), [SA18 3RF](https://openindex.co.uk/postcode/sa18-3rf), [SA18 3RG](https://openindex.co.uk/postcode/sa18-3rg), [SA18 3RH](https://openindex.co.uk/postcode/sa18-3rh), [SA18 3RJ](https://openindex.co.uk/postcode/sa18-3rj), [SA18 3RL](https://openindex.co.uk/postcode/sa18-3rl), [SA18 3RN](https://openindex.co.uk/postcode/sa18-3rn), [SA18 3RP](https://openindex.co.uk/postcode/sa18-3rp), [SA18 3RQ](https://openindex.co.uk/postcode/sa18-3rq), [SA18 3RR](https://openindex.co.uk/postcode/sa18-3rr), [SA18 3RS](https://openindex.co.uk/postcode/sa18-3rs), [SA18 3RT](https://openindex.co.uk/postcode/sa18-3rt), [SA18 3RU](https://openindex.co.uk/postcode/sa18-3ru), [SA18 3RX](https://openindex.co.uk/postcode/sa18-3rx), [SA18 3RY](https://openindex.co.uk/postcode/sa18-3ry), [SA18 3SA](https://openindex.co.uk/postcode/sa18-3sa), [SA18 3SB](https://openindex.co.uk/postcode/sa18-3sb), [SA18 3SD](https://openindex.co.uk/postcode/sa18-3sd), [SA18 3SE](https://openindex.co.uk/postcode/sa18-3se), [SA18 3SF](https://openindex.co.uk/postcode/sa18-3sf), [SA18 3SG](https://openindex.co.uk/postcode/sa18-3sg), [SA18 3SH](https://openindex.co.uk/postcode/sa18-3sh), [SA18 3SJ](https://openindex.co.uk/postcode/sa18-3sj), [SA18 3SL](https://openindex.co.uk/postcode/sa18-3sl), [SA18 3SN](https://openindex.co.uk/postcode/sa18-3sn), [SA18 3SP](https://openindex.co.uk/postcode/sa18-3sp), [SA18 3SR](https://openindex.co.uk/postcode/sa18-3sr), [SA18 3SS](https://openindex.co.uk/postcode/sa18-3ss), [SA18 3SU](https://openindex.co.uk/postcode/sa18-3su), [SA18 3SX](https://openindex.co.uk/postcode/sa18-3sx), [SA18 3SY](https://openindex.co.uk/postcode/sa18-3sy), [SA18 3SZ](https://openindex.co.uk/postcode/sa18-3sz), [SA18 3TA](https://openindex.co.uk/postcode/sa18-3ta), [SA18 3TB](https://openindex.co.uk/postcode/sa18-3tb), [SA18 3TD](https://openindex.co.uk/postcode/sa18-3td), [SA18 3TE](https://openindex.co.uk/postcode/sa18-3te), [SA18 3TF](https://openindex.co.uk/postcode/sa18-3tf), [SA18 3TG](https://openindex.co.uk/postcode/sa18-3tg), [SA18 3TH](https://openindex.co.uk/postcode/sa18-3th), [SA18 3TJ](https://openindex.co.uk/postcode/sa18-3tj), [SA18 3TL](https://openindex.co.uk/postcode/sa18-3tl), [SA18 3TN](https://openindex.co.uk/postcode/sa18-3tn), [SA18 3TP](https://openindex.co.uk/postcode/sa18-3tp), [SA18 3TQ](https://openindex.co.uk/postcode/sa18-3tq), [SA18 3TR](https://openindex.co.uk/postcode/sa18-3tr), [SA18 3TS](https://openindex.co.uk/postcode/sa18-3ts), [SA18 3TT](https://openindex.co.uk/postcode/sa18-3tt), [SA18 3TU](https://openindex.co.uk/postcode/sa18-3tu), [SA18 3TW](https://openindex.co.uk/postcode/sa18-3tw), [SA18 3TX](https://openindex.co.uk/postcode/sa18-3tx), [SA18 3TY](https://openindex.co.uk/postcode/sa18-3ty), [SA18 3TZ](https://openindex.co.uk/postcode/sa18-3tz), [SA18 3UA](https://openindex.co.uk/postcode/sa18-3ua), [SA18 3UB](https://openindex.co.uk/postcode/sa18-3ub), [SA18 3UD](https://openindex.co.uk/postcode/sa18-3ud), [SA18 3UE](https://openindex.co.uk/postcode/sa18-3ue), [SA18 3UF](https://openindex.co.uk/postcode/sa18-3uf), [SA18 3UG](https://openindex.co.uk/postcode/sa18-3ug), [SA18 3UH](https://openindex.co.uk/postcode/sa18-3uh), [SA18 3UJ](https://openindex.co.uk/postcode/sa18-3uj), [SA18 3UL](https://openindex.co.uk/postcode/sa18-3ul), [SA18 3UP](https://openindex.co.uk/postcode/sa18-3up), [SA18 3UR](https://openindex.co.uk/postcode/sa18-3ur), [SA18 3US](https://openindex.co.uk/postcode/sa18-3us), [SA18 3UT](https://openindex.co.uk/postcode/sa18-3ut), [SA18 3UU](https://openindex.co.uk/postcode/sa18-3uu), [SA18 3UW](https://openindex.co.uk/postcode/sa18-3uw), [SA18 3UY](https://openindex.co.uk/postcode/sa18-3uy), [SA18 3YA](https://openindex.co.uk/postcode/sa18-3ya), [SA18 3YB](https://openindex.co.uk/postcode/sa18-3yb), [SA18 3YD](https://openindex.co.uk/postcode/sa18-3yd), [SA18 3YF](https://openindex.co.uk/postcode/sa18-3yf), [SA18 3YG](https://openindex.co.uk/postcode/sa18-3yg), [SA18 3YH](https://openindex.co.uk/postcode/sa18-3yh), [SA18 3YL](https://openindex.co.uk/postcode/sa18-3yl), [SA18 3YN](https://openindex.co.uk/postcode/sa18-3yn), [SA18 3YP](https://openindex.co.uk/postcode/sa18-3yp), [SA18 3YR](https://openindex.co.uk/postcode/sa18-3yr), [SA18 3YS](https://openindex.co.uk/postcode/sa18-3ys), [SA18 3YT](https://openindex.co.uk/postcode/sa18-3yt), [SA18 3YU](https://openindex.co.uk/postcode/sa18-3yu)

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/sa18-3.

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/sa18-3