SM4 4 postcode sector in the SM4 district

SM4 4 is a sector of the SM4 district: every postcode that starts SM4 4. It has 178 postcodes in use, 2 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 4 sector, by flood risk

Map of every postcode in the SM4 4 sector, by flood risk Of the 178 postcodes in the SM4 4 sector that ONS places, 5 have a home or business at high risk, 10 are at medium risk at worst, 19 are at low risk at worst and 144 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Lower Morden, Cannon Hill. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. SM4 4AB: not on the flood risk listSM4 4AD: not on the flood risk listSM4 4AE: not on the flood risk listSM4 4AG: not on the flood risk listSM4 4AH: not on the flood risk listSM4 4AJ: not on the flood risk listSM4 4AN: not on the flood risk listSM4 4AP: not on the flood risk listSM4 4AR: not on the flood risk listSM4 4AS: not on the flood risk listSM4 4AT: not on the flood risk listSM4 4AU: not on the flood risk listSM4 4AW: not on the flood risk listSM4 4AX: not on the flood risk listSM4 4AY: not on the flood risk listSM4 4AZ: not on the flood risk listSM4 4BA: not on the flood risk listSM4 4BB: not on the flood risk listSM4 4BE: not on the flood risk listSM4 4BH: not on the flood risk listSM4 4BN: not on the flood risk listSM4 4BP: not on the flood risk listSM4 4BQ: not on the flood risk listSM4 4BS: not on the flood risk listSM4 4BU: not on the flood risk listSM4 4BW: not on the flood risk listSM4 4BX: not on the flood risk listSM4 4DA: not on the flood risk listSM4 4DB: not on the flood risk listSM4 4DD: not on the flood risk listSM4 4DF: not on the flood risk listSM4 4DG: not on the flood risk listSM4 4DH: not on the flood risk listSM4 4DJ: not on the flood risk listSM4 4DL: not on the flood risk listSM4 4DN: not on the flood risk listSM4 4DP: not on the flood risk listSM4 4DQ: not on the flood risk listSM4 4DR: not on the flood risk listSM4 4DS: not on the flood risk listSM4 4DW: not on the flood risk listSM4 4DX: not on the flood risk listSM4 4EA: not on the flood risk listSM4 4EB: not on the flood risk listSM4 4ED: not on the flood risk listSM4 4EE: not on the flood risk listSM4 4EF: not on the flood risk listSM4 4EG: not on the flood risk listSM4 4EL: not on the flood risk listSM4 4EN: not on the flood risk listSM4 4EP: not on the flood risk listSM4 4EQ: not on the flood risk listSM4 4ER: not on the flood risk listSM4 4ES: not on the flood risk listSM4 4ET: not on the flood risk listSM4 4EU: not on the flood risk listSM4 4EW: not on the flood risk listSM4 4HA: not on the flood risk listSM4 4HB: not on the flood risk listSM4 4HD: not on the flood risk listSM4 4HE: not on the flood risk listSM4 4HF: not on the flood risk listSM4 4HG: not on the flood risk listSM4 4HH: not on the flood risk listSM4 4HJ: not on the flood risk listSM4 4HL: not on the flood risk listSM4 4HQ: not on the flood risk listSM4 4HS: not on the flood risk listSM4 4HU: not on the flood risk listSM4 4HW: not on the flood risk listSM4 4HX: not on the flood risk listSM4 4HZ: not on the flood risk listSM4 4JB: not on the flood risk listSM4 4JD: not on the flood risk listSM4 4JE: not on the flood risk listSM4 4JF: not on the flood risk listSM4 4JG: not on the flood risk listSM4 4JL: not on the flood risk listSM4 4JQ: not on the flood risk listSM4 4JY: not on the flood risk listSM4 4LE: not on the flood risk listSM4 4LP: not on the flood risk listSM4 4LZ: not on the flood risk listSM4 4NE: not on the flood risk listSM4 4NF: not on the flood risk listSM4 4NH: not on the flood risk listSM4 4NJ: not on the flood risk listSM4 4NL: not on the flood risk listSM4 4PD: not on the flood risk listSM4 4PE: not on the flood risk listSM4 4PF: not on the flood risk listSM4 4PG: not on the flood risk listSM4 4PH: not on the flood risk listSM4 4PJ: not on the flood risk listSM4 4PL: not on the flood risk listSM4 4PN: not on the flood risk listSM4 4PQ: not on the flood risk listSM4 4PS: not on the flood risk listSM4 4PT: not on the flood risk listSM4 4PU: not on the flood risk listSM4 4PX: not on the flood risk listSM4 4PY: not on the flood risk listSM4 4PZ: not on the flood risk listSM4 4QA: not on the flood risk listSM4 4QB: not on the flood risk listSM4 4QD: not on the flood risk listSM4 4QF: not on the flood risk listSM4 4QG: not on the flood risk listSM4 4QN: not on the flood risk listSM4 4QP: not on the flood risk listSM4 4QQ: not on the flood risk listSM4 4QU: not on the flood risk listSM4 4QW: not on the flood risk listSM4 4QX: not on the flood risk listSM4 4QY: not on the flood risk listSM4 4QZ: not on the flood risk listSM4 4RA: not on the flood risk listSM4 4RB: not on the flood risk listSM4 4RD: not on the flood risk listSM4 4RF: not on the flood risk listSM4 4RH: not on the flood risk listSM4 4RJ: not on the flood risk listSM4 4RN: not on the flood risk listSM4 4RP: not on the flood risk listSM4 4RQ: not on the flood risk listSM4 4RR: not on the flood risk listSM4 4RS: not on the flood risk listSM4 4RT: not on the flood risk listSM4 4RU: not on the flood risk listSM4 4RW: not on the flood risk listSM4 4SA: not on the flood risk listSM4 4SE: not on the flood risk listSM4 4SF: not on the flood risk listSM4 4SP: not on the flood risk listSM4 4SR: not on the flood risk listSM4 4ST: not on the flood risk listSM4 4SU: not on the flood risk listSM4 4SW: not on the flood risk listSM4 4SX: not on the flood risk listSM4 4SY: not on the flood risk listSM4 4SZ: not on the flood risk listSM4 4TA: not on the flood risk listSM4 4TB: not on the flood risk listSM4 4TD: not on the flood risk listSM4 4BY: low flood risk at worstSM4 4JR: low flood risk at worstSM4 4JS: low flood risk at worstSM4 4JW: low flood risk at worstSM4 4JZ: low flood risk at worstSM4 4LD: low flood risk at worstSM4 4LG: low flood risk at worstSM4 4LR: low flood risk at worstSM4 4LS: low flood risk at worstSM4 4LU: low flood risk at worstSM4 4NU: low flood risk at worstSM4 4NW: low flood risk at worstSM4 4NY: low flood risk at worstSM4 4RX: low flood risk at worstSM4 4RZ: low flood risk at worstSM4 4SG: low flood risk at worstSM4 4SS: low flood risk at worstSM4 4TQ: low flood risk at worstSM4 4TS: low flood risk at worstSM4 4BZ: medium flood risk at worstSM4 4EX: medium flood risk at worstSM4 4JJ: medium flood risk at worstSM4 4JN: medium flood risk at worstSM4 4JP: medium flood risk at worstSM4 4JX: medium flood risk at worstSM4 4LF: medium flood risk at worstSM4 4NN: medium flood risk at worstSM4 4NP: medium flood risk at worstSM4 4NX: medium flood risk at worstSM4 4NR: high flood riskSM4 4NS: high flood riskSM4 4PA: high flood riskSM4 4RY: high flood riskSM4 4SJ: high flood risk Lower MordenCannon Hill 5 postcodes at high or medium risk, outlined: this goes to SM4 4NS, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in the SM4 4 sector, by flood risk Of the 178 postcodes in the SM4 4 sector that ONS places, 5 have a home or business at high risk, 10 are at medium risk at worst, 19 are at low risk at worst and 144 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Lower Morden, Cannon Hill. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Lower MordenCannon Hill
  • A home or business at high risk: 5
  • At medium risk at worst: 10
  • At low risk at worst: 19
  • At very low risk only: 0
  • Not on the at-risk list: 144
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 178 postcodes in the SM4 4 sector that ONS places, 5 have a home or business at high risk, 10 are at medium risk at worst, 19 are at low risk at worst and 144 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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. 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 high risk

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

SM4 4NS7 at high riskSM4 4RY4 at high riskSM4 4NR2 at high riskSM4 4SJ2 at high riskSM4 4PA1 at high risk

Where the postcodes at high or medium risk lie together

  • 5 postcodes at high or medium risk, outlined on the map. SM4 4NS, is the one with most homes and businesses at high risk.

What do homes sell for in SM4 4?

Homes in SM4 4 sold for a typical £545,000 in the 12 months to August 2026, across 95 sales, down 2.7% on the 12 months before, HM Land Registry's figures show.

£545,000 typical price, the 12 months to August 2026
£560,000 12 months to August 2025
▼ down 2.7% on the 12 months before
  • Detached 1 sale, too few to price
  • Semi-detached £635,000 13 sales
  • Terraced £561,500 58 sales
  • Flat or maisonette £350,000 23 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 4. 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 4

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 4ABSM4 4ADSM4 4AESM4 4AGSM4 4AHSM4 4AJSM4 4ANSM4 4APSM4 4ARSM4 4ASSM4 4ATSM4 4AUSM4 4AWSM4 4AXSM4 4AYSM4 4AZSM4 4BASM4 4BBSM4 4BESM4 4BHSM4 4BNSM4 4BPSM4 4BQSM4 4BSSM4 4BUSM4 4BWSM4 4BXSM4 4BYSM4 4BZSM4 4DASM4 4DBSM4 4DDSM4 4DFSM4 4DGSM4 4DHSM4 4DJSM4 4DLSM4 4DNSM4 4DPSM4 4DQSM4 4DRSM4 4DSSM4 4DWSM4 4DXSM4 4EASM4 4EBSM4 4EDSM4 4EESM4 4EFSM4 4EGSM4 4ELSM4 4ENSM4 4EPSM4 4EQSM4 4ERSM4 4ESSM4 4ETSM4 4EUSM4 4EWSM4 4EXSM4 4HASM4 4HBSM4 4HDSM4 4HESM4 4HFSM4 4HGSM4 4HHSM4 4HJSM4 4HLSM4 4HQSM4 4HSSM4 4HUSM4 4HWSM4 4HXSM4 4HZSM4 4JBSM4 4JDSM4 4JESM4 4JFSM4 4JGSM4 4JJSM4 4JLSM4 4JNSM4 4JPSM4 4JQSM4 4JRSM4 4JSSM4 4JWSM4 4JXSM4 4JYSM4 4JZSM4 4LDSM4 4LESM4 4LFSM4 4LGSM4 4LPSM4 4LRSM4 4LSSM4 4LUSM4 4LZSM4 4NESM4 4NFSM4 4NHSM4 4NJSM4 4NLSM4 4NNSM4 4NPSM4 4NRSM4 4NSSM4 4NUSM4 4NWSM4 4NXSM4 4NYSM4 4PASM4 4PDSM4 4PESM4 4PFSM4 4PGSM4 4PHSM4 4PJSM4 4PLSM4 4PNSM4 4PQSM4 4PSSM4 4PTSM4 4PUSM4 4PXSM4 4PYSM4 4PZSM4 4QASM4 4QBSM4 4QDSM4 4QFSM4 4QGSM4 4QNSM4 4QPSM4 4QQSM4 4QUSM4 4QWSM4 4QXSM4 4QYSM4 4QZSM4 4RASM4 4RBSM4 4RDSM4 4RFSM4 4RHSM4 4RJSM4 4RNSM4 4RPSM4 4RQSM4 4RRSM4 4RSSM4 4RTSM4 4RUSM4 4RWSM4 4RXSM4 4RYSM4 4RZSM4 4SASM4 4SESM4 4SFSM4 4SGSM4 4SJSM4 4SPSM4 4SRSM4 4SSSM4 4STSM4 4SUSM4 4SWSM4 4SXSM4 4SYSM4 4SZSM4 4TASM4 4TBSM4 4TDSM4 4TQSM4 4TS

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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