SM4 5 postcode sector in the SM4 district

SM4 5 is a sector of the SM4 district: every postcode that starts SM4 5. It has 165 postcodes in use, 11 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 SM4 5 sector, by flood risk

Map of every postcode in the SM4 5 sector, by flood risk Of the 165 postcodes in the SM4 5 sector that ONS places, 1 are at medium risk at worst, 4 are at low risk at worst and 160 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: St Helier, Merton Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A297A24 SM4 5AA: not on the flood risk listSM4 5AB: not on the flood risk listSM4 5AD: not on the flood risk listSM4 5AE: not on the flood risk listSM4 5AF: not on the flood risk listSM4 5AG: not on the flood risk listSM4 5AH: not on the flood risk listSM4 5AJ: not on the flood risk listSM4 5AL: not on the flood risk listSM4 5AN: not on the flood risk listSM4 5AP: not on the flood risk listSM4 5AQ: not on the flood risk listSM4 5AR: not on the flood risk listSM4 5AS: not on the flood risk listSM4 5AT: not on the flood risk listSM4 5AW: not on the flood risk listSM4 5AX: not on the flood risk listSM4 5AZ: not on the flood risk listSM4 5BA: not on the flood risk listSM4 5BE: not on the flood risk listSM4 5BF: not on the flood risk listSM4 5BG: not on the flood risk listSM4 5BL: not on the flood risk listSM4 5BQ: not on the flood risk listSM4 5BT: not on the flood risk listSM4 5BU: not on the flood risk listSM4 5BW: not on the flood risk listSM4 5BY: not on the flood risk listSM4 5DA: not on the flood risk listSM4 5DB: not on the flood risk listSM4 5DD: not on the flood risk listSM4 5DE: not on the flood risk listSM4 5DF: not on the flood risk listSM4 5DG: not on the flood risk listSM4 5DH: not on the flood risk listSM4 5DJ: not on the flood risk listSM4 5DN: not on the flood risk listSM4 5DP: not on the flood risk listSM4 5DQ: not on the flood risk listSM4 5DS: not on the flood risk listSM4 5DT: not on the flood risk listSM4 5DU: not on the flood risk listSM4 5DW: not on the flood risk listSM4 5DX: not on the flood risk listSM4 5HE: not on the flood risk listSM4 5HG: not on the flood risk listSM4 5HH: not on the flood risk listSM4 5HJ: not on the flood risk listSM4 5HN: not on the flood risk listSM4 5HP: not on the flood risk listSM4 5HQ: not on the flood risk listSM4 5HT: not on the flood risk listSM4 5HW: not on the flood risk listSM4 5HX: not on the flood risk listSM4 5JA: not on the flood risk listSM4 5JF: not on the flood risk listSM4 5JG: not on the flood risk listSM4 5JH: not on the flood risk listSM4 5JJ: not on the flood risk listSM4 5JL: not on the flood risk listSM4 5JN: not on the flood risk listSM4 5JP: not on the flood risk listSM4 5JQ: not on the flood risk listSM4 5JS: not on the flood risk listSM4 5JW: not on the flood risk listSM4 5JX: not on the flood risk listSM4 5JY: not on the flood risk listSM4 5LA: not on the flood risk listSM4 5LB: not on the flood risk listSM4 5LF: not on the flood risk listSM4 5LH: not on the flood risk listSM4 5LJ: not on the flood risk listSM4 5LN: not on the flood risk listSM4 5LP: not on the flood risk listSM4 5LQ: not on the flood risk listSM4 5LR: not on the flood risk listSM4 5LT: not on the flood risk listSM4 5LU: not on the flood risk listSM4 5LW: not on the flood risk listSM4 5LX: not on the flood risk listSM4 5LY: not on the flood risk listSM4 5NA: not on the flood risk listSM4 5NB: not on the flood risk listSM4 5ND: not on the flood risk listSM4 5NE: not on the flood risk listSM4 5NF: not on the flood risk listSM4 5NG: not on the flood risk listSM4 5NH: not on the flood risk listSM4 5NJ: not on the flood risk listSM4 5NL: not on the flood risk listSM4 5NN: not on the flood risk listSM4 5NP: not on the flood risk listSM4 5NQ: not on the flood risk listSM4 5NR: not on the flood risk listSM4 5NS: not on the flood risk listSM4 5NT: not on the flood risk listSM4 5NW: not on the flood risk listSM4 5NX: not on the flood risk listSM4 5NY: not on the flood risk listSM4 5NZ: not on the flood risk listSM4 5PA: not on the flood risk listSM4 5PB: not on the flood risk listSM4 5PE: not on the flood risk listSM4 5PF: not on the flood risk listSM4 5PG: not on the flood risk listSM4 5PH: not on the flood risk listSM4 5PJ: not on the flood risk listSM4 5PN: not on the flood risk listSM4 5PP: not on the flood risk listSM4 5PQ: not on the flood risk listSM4 5PS: not on the flood risk listSM4 5PT: not on the flood risk listSM4 5PU: not on the flood risk listSM4 5PX: not on the flood risk listSM4 5PY: not on the flood risk listSM4 5PZ: not on the flood risk listSM4 5QA: not on the flood risk listSM4 5QB: not on the flood risk listSM4 5QL: not on the flood risk listSM4 5QN: not on the flood risk listSM4 5QP: not on the flood risk listSM4 5QQ: not on the flood risk listSM4 5QR: not on the flood risk listSM4 5QT: not on the flood risk listSM4 5QU: not on the flood risk listSM4 5QW: not on the flood risk listSM4 5QX: not on the flood risk listSM4 5RA: not on the flood risk listSM4 5RB: not on the flood risk listSM4 5RD: not on the flood risk listSM4 5RE: not on the flood risk listSM4 5RF: not on the flood risk listSM4 5RG: not on the flood risk listSM4 5RJ: not on the flood risk listSM4 5RL: not on the flood risk listSM4 5RN: not on the flood risk listSM4 5RP: not on the flood risk listSM4 5RQ: not on the flood risk listSM4 5RR: not on the flood risk listSM4 5RS: not on the flood risk listSM4 5RT: not on the flood risk listSM4 5RU: not on the flood risk listSM4 5RW: not on the flood risk listSM4 5RX: not on the flood risk listSM4 5RY: not on the flood risk listSM4 5RZ: not on the flood risk listSM4 5SA: not on the flood risk listSM4 5SB: not on the flood risk listSM4 5SD: not on the flood risk listSM4 5SG: not on the flood risk listSM4 5SH: not on the flood risk listSM4 5SJ: not on the flood risk listSM4 5SL: not on the flood risk listSM4 5SP: not on the flood risk listSM4 5SQ: not on the flood risk listSM4 5SR: not on the flood risk listSM4 5ZP: not on the flood risk listSM4 5PR: low flood risk at worstSM4 5QD: low flood risk at worstSM4 5QH: low flood risk at worstSM4 5QS: low flood risk at worstSM4 5JD: medium flood risk at worst St HelierMerton Park Map of every postcode in the SM4 5 sector, by flood risk Of the 165 postcodes in the SM4 5 sector that ONS places, 1 are at medium risk at worst, 4 are at low risk at worst and 160 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: St Helier, Merton Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. St HelierMerton Park
  • A home or business at high risk: 0
  • At medium risk at worst: 1
  • At low risk at worst: 4
  • At very low risk only: 0
  • Not on the at-risk list: 160

Of the 165 postcodes in the SM4 5 sector that ONS places, 1 are at medium risk at worst, 4 are at low risk at worst and 160 are not on the Environment Agency's at-risk list.

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. Names in italics are council wards: we hold no town or village names here.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 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

The postcodes at medium risk at worst

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

SM4 5JD1 at medium risk

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

SM4 5HA

What do homes sell for in SM4 5?

Homes in SM4 5 sold for a typical £427,150 in the 12 months to August 2026, across 56 sales, down 13.7% on the 12 months before, HM Land Registry's figures show.

£427,150 typical price, the 12 months to August 2026
£495,000 12 months to August 2025
▼ down 13.7% on the 12 months before
  • Detached 1 sale, too few to price
  • Semi-detached £550,000 7 sales
  • Terraced £562,500 24 sales
  • Flat or maisonette £307,500 24 sales

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 SM4 5. 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 SM4 5

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.

SM4 5AASM4 5ABSM4 5ADSM4 5AESM4 5AFSM4 5AGSM4 5AHSM4 5AJSM4 5ALSM4 5ANSM4 5APSM4 5AQSM4 5ARSM4 5ASSM4 5ATSM4 5AWSM4 5AXSM4 5AZSM4 5BASM4 5BESM4 5BFSM4 5BGSM4 5BLSM4 5BQSM4 5BTSM4 5BUSM4 5BWSM4 5BYSM4 5DASM4 5DBSM4 5DDSM4 5DESM4 5DFSM4 5DGSM4 5DHSM4 5DJSM4 5DNSM4 5DPSM4 5DQSM4 5DSSM4 5DTSM4 5DUSM4 5DWSM4 5DXSM4 5HASM4 5HESM4 5HGSM4 5HHSM4 5HJSM4 5HNSM4 5HPSM4 5HQSM4 5HTSM4 5HWSM4 5HXSM4 5JASM4 5JDSM4 5JFSM4 5JGSM4 5JHSM4 5JJSM4 5JLSM4 5JNSM4 5JPSM4 5JQSM4 5JSSM4 5JWSM4 5JXSM4 5JYSM4 5LASM4 5LBSM4 5LFSM4 5LHSM4 5LJSM4 5LNSM4 5LPSM4 5LQSM4 5LRSM4 5LTSM4 5LUSM4 5LWSM4 5LXSM4 5LYSM4 5NASM4 5NBSM4 5NDSM4 5NESM4 5NFSM4 5NGSM4 5NHSM4 5NJSM4 5NLSM4 5NNSM4 5NPSM4 5NQSM4 5NRSM4 5NSSM4 5NTSM4 5NWSM4 5NXSM4 5NYSM4 5NZSM4 5PASM4 5PBSM4 5PESM4 5PFSM4 5PGSM4 5PHSM4 5PJSM4 5PNSM4 5PPSM4 5PQSM4 5PRSM4 5PSSM4 5PTSM4 5PUSM4 5PXSM4 5PYSM4 5PZSM4 5QASM4 5QBSM4 5QDSM4 5QHSM4 5QLSM4 5QNSM4 5QPSM4 5QQSM4 5QRSM4 5QSSM4 5QTSM4 5QUSM4 5QWSM4 5QXSM4 5RASM4 5RBSM4 5RDSM4 5RESM4 5RFSM4 5RGSM4 5RJSM4 5RLSM4 5RNSM4 5RPSM4 5RQSM4 5RRSM4 5RSSM4 5RTSM4 5RUSM4 5RWSM4 5RXSM4 5RYSM4 5RZSM4 5SASM4 5SBSM4 5SDSM4 5SGSM4 5SHSM4 5SJSM4 5SLSM4 5SPSM4 5SQSM4 5SRSM4 5ZPSM4 5ZTSM4 5ZY

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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