SA31 3 postcode sector in the SA31 district

SA31 3 is a sector of the SA31 district: every postcode that starts SA31 3. It has 203 postcodes in use, 9 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the SA31 3 sector, by gigabit broadband

Map of every postcode in the SA31 3 sector, by gigabit broadband Of the 203 postcodes in the SA31 3 sector that ONS places, 15 have no home or business that can get gigabit, 66 have some that can, 120 can all get it and 2 have no Ofcom figure. 2 postcodes lie beyond the edge and are listed under the map. Places named: Carmarthen. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A48 SA31 3BB: no Ofcom figureSA31 3FN: no Ofcom figureSA31 3AE: gigabit for allSA31 3AF: gigabit for allSA31 3AN: gigabit for allSA31 3BA: gigabit for allSA31 3BE: gigabit for allSA31 3BG: gigabit for allSA31 3BJ: gigabit for allSA31 3BL: gigabit for allSA31 3BP: gigabit for allSA31 3BR: gigabit for allSA31 3BU: gigabit for allSA31 3BW: gigabit for allSA31 3BZ: gigabit for allSA31 3DA: gigabit for allSA31 3DB: gigabit for allSA31 3DD: gigabit for allSA31 3DH: gigabit for allSA31 3DJ: gigabit for allSA31 3DL: gigabit for allSA31 3DN: gigabit for allSA31 3DP: gigabit for allSA31 3DQ: gigabit for allSA31 3DR: gigabit for allSA31 3DS: gigabit for allSA31 3DT: gigabit for allSA31 3DU: gigabit for allSA31 3DW: gigabit for allSA31 3DX: gigabit for allSA31 3DZ: gigabit for allSA31 3EA: gigabit for allSA31 3EB: gigabit for allSA31 3ED: gigabit for allSA31 3EE: gigabit for allSA31 3EF: gigabit for allSA31 3EG: gigabit for allSA31 3EH: gigabit for allSA31 3EL: gigabit for allSA31 3ES: gigabit for allSA31 3EU: gigabit for allSA31 3EW: gigabit for allSA31 3EZ: gigabit for allSA31 3FA: gigabit for allSA31 3FB: gigabit for allSA31 3FD: gigabit for allSA31 3FJ: gigabit for allSA31 3GA: gigabit for allSA31 3GH: gigabit for allSA31 3GL: gigabit for allSA31 3GR: gigabit for allSA31 3GU: gigabit for allSA31 3HA: gigabit for allSA31 3HD: gigabit for allSA31 3HE: gigabit for allSA31 3HF: gigabit for allSA31 3HH: gigabit for allSA31 3HJ: gigabit for allSA31 3HQ: gigabit for allSA31 3HR: gigabit for allSA31 3HS: gigabit for allSA31 3HT: gigabit for allSA31 3HU: gigabit for allSA31 3HX: gigabit for allSA31 3HZ: gigabit for allSA31 3JA: gigabit for allSA31 3JB: gigabit for allSA31 3JD: gigabit for allSA31 3JE: gigabit for allSA31 3JF: gigabit for allSA31 3JH: gigabit for allSA31 3JJ: gigabit for allSA31 3JL: gigabit for allSA31 3JN: gigabit for allSA31 3JR: gigabit for allSA31 3JU: gigabit for allSA31 3JW: gigabit for allSA31 3LD: gigabit for allSA31 3LE: gigabit for allSA31 3LL: gigabit for allSA31 3LY: gigabit for allSA31 3LZ: gigabit for allSA31 3NA: gigabit for allSA31 3NB: gigabit for allSA31 3NJ: gigabit for allSA31 3NN: gigabit for allSA31 3NR: gigabit for allSA31 3NS: gigabit for allSA31 3NU: gigabit for allSA31 3NW: gigabit for allSA31 3NX: gigabit for allSA31 3NY: gigabit for allSA31 3NZ: gigabit for allSA31 3PB: gigabit for allSA31 3PE: gigabit for allSA31 3PG: gigabit for allSA31 3PJ: gigabit for allSA31 3PL: gigabit for allSA31 3PN: gigabit for allSA31 3PP: gigabit for allSA31 3PR: gigabit for allSA31 3PS: gigabit for allSA31 3PT: gigabit for allSA31 3PW: gigabit for allSA31 3PX: gigabit for allSA31 3PZ: gigabit for allSA31 3QA: gigabit for allSA31 3QD: gigabit for allSA31 3QP: gigabit for allSA31 3QR: gigabit for allSA31 3QT: gigabit for allSA31 3QX: gigabit for allSA31 3QZ: gigabit for allSA31 3RD: gigabit for allSA31 3RL: gigabit for allSA31 3RY: gigabit for allSA31 3SA: gigabit for allSA31 3SB: gigabit for allSA31 3SD: gigabit for allSA31 3SE: gigabit for allSA31 3AD: some gigabitSA31 3AL: some gigabitSA31 3AP: some gigabitSA31 3AR: some gigabitSA31 3AX: some gigabitSA31 3AY: some gigabitSA31 3AZ: some gigabitSA31 3BD: some gigabitSA31 3BN: some gigabitSA31 3BS: some gigabitSA31 3BX: some gigabitSA31 3BY: some gigabitSA31 3DE: some gigabitSA31 3DF: some gigabitSA31 3DG: some gigabitSA31 3DY: some gigabitSA31 3EJ: some gigabitSA31 3EN: some gigabitSA31 3EQ: some gigabitSA31 3ER: some gigabitSA31 3ET: some gigabitSA31 3EX: some gigabitSA31 3EY: some gigabitSA31 3FG: some gigabitSA31 3GB: some gigabitSA31 3HB: some gigabitSA31 3HG: some gigabitSA31 3HL: some gigabitSA31 3HN: some gigabitSA31 3HP: some gigabitSA31 3HW: some gigabitSA31 3JG: some gigabitSA31 3JP: some gigabitSA31 3JQ: some gigabitSA31 3JT: some gigabitSA31 3LN: some gigabitSA31 3LP: some gigabitSA31 3LQ: some gigabitSA31 3LS: some gigabitSA31 3LU: some gigabitSA31 3LW: some gigabitSA31 3LX: some gigabitSA31 3NE: some gigabitSA31 3NF: some gigabitSA31 3NG: some gigabitSA31 3NQ: some gigabitSA31 3PA: some gigabitSA31 3PD: some gigabitSA31 3PH: some gigabitSA31 3PQ: some gigabitSA31 3PU: some gigabitSA31 3PY: some gigabitSA31 3QE: some gigabitSA31 3QF: some gigabitSA31 3QG: some gigabitSA31 3QL: some gigabitSA31 3QN: some gigabitSA31 3QQ: some gigabitSA31 3QW: some gigabitSA31 3QY: some gigabitSA31 3RB: some gigabitSA31 3RJ: some gigabitSA31 3RN: some gigabitSA31 3RU: some gigabitSA31 3AQ: some gigabitSA31 3AB: no gigabitSA31 3AS: no gigabitSA31 3BH: no gigabitSA31 3BT: no gigabitSA31 3EP: no gigabitSA31 3FF: no gigabitSA31 3HY: no gigabitSA31 3JS: no gigabitSA31 3NL: no gigabitSA31 3QS: no gigabitSA31 3RG: no gigabitSA31 3RP: no gigabitSA31 3RS: no gigabitSA31 3SG: no gigabit Carmarthen Map of every postcode in the SA31 3 sector, by gigabit broadband Of the 203 postcodes in the SA31 3 sector that ONS places, 15 have no home or business that can get gigabit, 66 have some that can, 120 can all get it and 2 have no Ofcom figure. 2 postcodes lie beyond the edge and are listed under the map. Places named: Carmarthen. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Carmarthen
  • No home or business can get gigabit: 15
  • Some can get gigabit: 66
  • Every home and business can get gigabit: 120
  • Ofcom gives no figure: 2

Of the 203 postcodes in the SA31 3 sector that ONS places, 15 have no home or business that can get gigabit, 66 have some that can, 120 can all get it and 2 have no Ofcom figure.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; gigabit: Ofcom, Connected Nations, Spring 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

Postcodes without gigabit

15 postcodes here have no gigabit. These are the 12 first in postcode order.

SA31 3ABSA31 3ASSA31 3BHSA31 3BTSA31 3EPSA31 3FFSA31 3HYSA31 3JSSA31 3NLSA31 3QSSA31 3RGSA31 3RP

2 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

SA31 3QUSA31 3RR

What do homes sell for in SA31 3?

Homes in SA31 3 sold for a typical £230,000 in the 12 months to August 2026, across 82 sales, down 3.7% on the 12 months before, HM Land Registry's figures show.

£230,000 typical price, the 12 months to August 2026
£238,748 12 months to August 2025
▼ down 3.7% on the 12 months before
  • Detached £265,000 31 sales
  • Semi-detached £225,000 25 sales
  • Terraced £158,000 25 sales
  • Flat or maisonette 1 sale, too few to price

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start SA31 3. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in SA31 3

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

SA31 3ABSA31 3ADSA31 3AESA31 3AFSA31 3AJSA31 3ALSA31 3ANSA31 3APSA31 3AQSA31 3ARSA31 3ASSA31 3AXSA31 3AYSA31 3AZSA31 3BASA31 3BBSA31 3BDSA31 3BESA31 3BGSA31 3BHSA31 3BJSA31 3BLSA31 3BNSA31 3BPSA31 3BQSA31 3BRSA31 3BSSA31 3BTSA31 3BUSA31 3BWSA31 3BXSA31 3BYSA31 3BZSA31 3DASA31 3DBSA31 3DDSA31 3DESA31 3DFSA31 3DGSA31 3DHSA31 3DJSA31 3DLSA31 3DNSA31 3DPSA31 3DQSA31 3DRSA31 3DSSA31 3DTSA31 3DUSA31 3DWSA31 3DXSA31 3DYSA31 3DZSA31 3EASA31 3EBSA31 3EDSA31 3EESA31 3EFSA31 3EGSA31 3EHSA31 3EJSA31 3ELSA31 3ENSA31 3EPSA31 3EQSA31 3ERSA31 3ESSA31 3ETSA31 3EUSA31 3EWSA31 3EXSA31 3EYSA31 3EZSA31 3FASA31 3FBSA31 3FDSA31 3FFSA31 3FGSA31 3FJSA31 3FNSA31 3GASA31 3GBSA31 3GHSA31 3GLSA31 3GRSA31 3GUSA31 3HASA31 3HBSA31 3HDSA31 3HESA31 3HFSA31 3HGSA31 3HHSA31 3HJSA31 3HLSA31 3HNSA31 3HPSA31 3HQSA31 3HRSA31 3HSSA31 3HTSA31 3HUSA31 3HWSA31 3HXSA31 3HYSA31 3HZSA31 3JASA31 3JBSA31 3JDSA31 3JESA31 3JFSA31 3JGSA31 3JHSA31 3JJSA31 3JLSA31 3JNSA31 3JPSA31 3JQSA31 3JRSA31 3JSSA31 3JTSA31 3JUSA31 3JWSA31 3LDSA31 3LESA31 3LLSA31 3LNSA31 3LPSA31 3LQSA31 3LSSA31 3LUSA31 3LWSA31 3LXSA31 3LYSA31 3LZSA31 3NASA31 3NBSA31 3NESA31 3NFSA31 3NGSA31 3NJSA31 3NLSA31 3NNSA31 3NQSA31 3NRSA31 3NSSA31 3NUSA31 3NWSA31 3NXSA31 3NYSA31 3NZSA31 3PASA31 3PBSA31 3PDSA31 3PESA31 3PGSA31 3PHSA31 3PJSA31 3PLSA31 3PNSA31 3PPSA31 3PQSA31 3PRSA31 3PSSA31 3PTSA31 3PUSA31 3PWSA31 3PXSA31 3PYSA31 3PZSA31 3QASA31 3QDSA31 3QESA31 3QFSA31 3QGSA31 3QLSA31 3QNSA31 3QPSA31 3QQSA31 3QRSA31 3QSSA31 3QTSA31 3QUSA31 3QWSA31 3QXSA31 3QYSA31 3QZSA31 3RBSA31 3RDSA31 3RGSA31 3RJSA31 3RLSA31 3RNSA31 3RPSA31 3RRSA31 3RSSA31 3RUSA31 3RYSA31 3SASA31 3SBSA31 3SDSA31 3SESA31 3SG

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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