SM1 3 postcode sector in the SM1 district

SM1 3 is a sector of the SM1 district: every postcode that starts SM1 3. It has 216 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 SM1 3 sector, by flood risk

Map of every postcode in the SM1 3 sector, by flood risk Of the 216 postcodes in the SM1 3 sector that ONS places, 1 have a home or business at high risk, 2 are at low risk at worst and 213 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Sutton North, The Wrythe. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. SM1 3AA: not on the flood risk listSM1 3AB: not on the flood risk listSM1 3AD: not on the flood risk listSM1 3AE: not on the flood risk listSM1 3AF: not on the flood risk listSM1 3AG: not on the flood risk listSM1 3AH: not on the flood risk listSM1 3AJ: not on the flood risk listSM1 3AL: not on the flood risk listSM1 3AN: not on the flood risk listSM1 3AQ: not on the flood risk listSM1 3AS: not on the flood risk listSM1 3AT: not on the flood risk listSM1 3AU: not on the flood risk listSM1 3AW: not on the flood risk listSM1 3AX: not on the flood risk listSM1 3AY: not on the flood risk listSM1 3AZ: not on the flood risk listSM1 3BA: not on the flood risk listSM1 3BE: not on the flood risk listSM1 3BF: not on the flood risk listSM1 3BG: not on the flood risk listSM1 3BH: not on the flood risk listSM1 3BJ: not on the flood risk listSM1 3BL: not on the flood risk listSM1 3BN: not on the flood risk listSM1 3BP: not on the flood risk listSM1 3BQ: not on the flood risk listSM1 3BS: not on the flood risk listSM1 3BT: not on the flood risk listSM1 3BU: not on the flood risk listSM1 3BW: not on the flood risk listSM1 3BX: not on the flood risk listSM1 3BY: not on the flood risk listSM1 3BZ: not on the flood risk listSM1 3DA: not on the flood risk listSM1 3DB: not on the flood risk listSM1 3DD: not on the flood risk listSM1 3DE: not on the flood risk listSM1 3DF: not on the flood risk listSM1 3DG: not on the flood risk listSM1 3DH: not on the flood risk listSM1 3DJ: not on the flood risk listSM1 3DL: not on the flood risk listSM1 3DN: not on the flood risk listSM1 3DP: not on the flood risk listSM1 3DQ: not on the flood risk listSM1 3DR: not on the flood risk listSM1 3DS: not on the flood risk listSM1 3DT: not on the flood risk listSM1 3DU: not on the flood risk listSM1 3DW: not on the flood risk listSM1 3DX: not on the flood risk listSM1 3DY: not on the flood risk listSM1 3DZ: not on the flood risk listSM1 3EA: not on the flood risk listSM1 3EB: not on the flood risk listSM1 3ED: not on the flood risk listSM1 3EE: not on the flood risk listSM1 3EF: not on the flood risk listSM1 3EG: not on the flood risk listSM1 3EH: not on the flood risk listSM1 3EJ: not on the flood risk listSM1 3EL: not on the flood risk listSM1 3EN: not on the flood risk listSM1 3EQ: not on the flood risk listSM1 3ET: not on the flood risk listSM1 3EU: not on the flood risk listSM1 3EW: not on the flood risk listSM1 3EX: not on the flood risk listSM1 3EY: not on the flood risk listSM1 3EZ: not on the flood risk listSM1 3HA: not on the flood risk listSM1 3HB: not on the flood risk listSM1 3HE: not on the flood risk listSM1 3HG: not on the flood risk listSM1 3HJ: not on the flood risk listSM1 3HL: not on the flood risk listSM1 3HN: not on the flood risk listSM1 3HP: not on the flood risk listSM1 3HQ: not on the flood risk listSM1 3HR: not on the flood risk listSM1 3HS: not on the flood risk listSM1 3HT: not on the flood risk listSM1 3HU: not on the flood risk listSM1 3HW: not on the flood risk listSM1 3HY: not on the flood risk listSM1 3HZ: not on the flood risk listSM1 3JA: not on the flood risk listSM1 3JB: not on the flood risk listSM1 3JD: not on the flood risk listSM1 3JE: not on the flood risk listSM1 3JG: not on the flood risk listSM1 3JH: not on the flood risk listSM1 3JJ: not on the flood risk listSM1 3JL: not on the flood risk listSM1 3JQ: not on the flood risk listSM1 3JT: not on the flood risk listSM1 3JX: not on the flood risk listSM1 3JY: not on the flood risk listSM1 3JZ: not on the flood risk listSM1 3LA: not on the flood risk listSM1 3LB: not on the flood risk listSM1 3LD: not on the flood risk listSM1 3LE: not on the flood risk listSM1 3LF: not on the flood risk listSM1 3LG: not on the flood risk listSM1 3LH: not on the flood risk listSM1 3LJ: not on the flood risk listSM1 3LL: not on the flood risk listSM1 3LP: not on the flood risk listSM1 3LQ: not on the flood risk listSM1 3LR: not on the flood risk listSM1 3LS: not on the flood risk listSM1 3LT: not on the flood risk listSM1 3LU: not on the flood risk listSM1 3LW: not on the flood risk listSM1 3LX: not on the flood risk listSM1 3LY: not on the flood risk listSM1 3LZ: not on the flood risk listSM1 3NA: not on the flood risk listSM1 3NB: not on the flood risk listSM1 3ND: not on the flood risk listSM1 3NE: not on the flood risk listSM1 3NF: not on the flood risk listSM1 3NG: not on the flood risk listSM1 3NH: not on the flood risk listSM1 3NJ: not on the flood risk listSM1 3NL: not on the flood risk listSM1 3NN: not on the flood risk listSM1 3NQ: not on the flood risk listSM1 3NS: not on the flood risk listSM1 3NT: not on the flood risk listSM1 3NU: not on the flood risk listSM1 3NW: not on the flood risk listSM1 3NY: not on the flood risk listSM1 3NZ: not on the flood risk listSM1 3PA: not on the flood risk listSM1 3PB: not on the flood risk listSM1 3PD: not on the flood risk listSM1 3PE: not on the flood risk listSM1 3PF: not on the flood risk listSM1 3PG: not on the flood risk listSM1 3PH: not on the flood risk listSM1 3PJ: not on the flood risk listSM1 3PL: not on the flood risk listSM1 3PN: not on the flood risk listSM1 3PQ: not on the flood risk listSM1 3PS: not on the flood risk listSM1 3PT: not on the flood risk listSM1 3PW: not on the flood risk listSM1 3PX: not on the flood risk listSM1 3PY: not on the flood risk listSM1 3PZ: not on the flood risk listSM1 3QB: not on the flood risk listSM1 3QD: not on the flood risk listSM1 3QE: not on the flood risk listSM1 3QF: not on the flood risk listSM1 3QG: not on the flood risk listSM1 3QH: not on the flood risk listSM1 3QJ: not on the flood risk listSM1 3QL: not on the flood risk listSM1 3QN: not on the flood risk listSM1 3QP: not on the flood risk listSM1 3QQ: not on the flood risk listSM1 3QR: not on the flood risk listSM1 3QS: not on the flood risk listSM1 3QT: not on the flood risk listSM1 3QU: not on the flood risk listSM1 3QW: not on the flood risk listSM1 3RA: not on the flood risk listSM1 3RB: not on the flood risk listSM1 3RD: not on the flood risk listSM1 3RE: not on the flood risk listSM1 3RF: not on the flood risk listSM1 3RG: not on the flood risk listSM1 3RJ: not on the flood risk listSM1 3RL: not on the flood risk listSM1 3RN: not on the flood risk listSM1 3RP: not on the flood risk listSM1 3RQ: not on the flood risk listSM1 3RR: not on the flood risk listSM1 3RS: not on the flood risk listSM1 3RT: not on the flood risk listSM1 3RU: not on the flood risk listSM1 3RW: not on the flood risk listSM1 3RX: not on the flood risk listSM1 3RY: not on the flood risk listSM1 3RZ: not on the flood risk listSM1 3SA: not on the flood risk listSM1 3SB: not on the flood risk listSM1 3SD: not on the flood risk listSM1 3SE: not on the flood risk listSM1 3SH: not on the flood risk listSM1 3SJ: not on the flood risk listSM1 3SL: not on the flood risk listSM1 3SN: not on the flood risk listSM1 3SP: not on the flood risk listSM1 3SQ: not on the flood risk listSM1 3SR: not on the flood risk listSM1 3SS: not on the flood risk listSM1 3ST: not on the flood risk listSM1 3SU: not on the flood risk listSM1 3SW: not on the flood risk listSM1 3SX: not on the flood risk listSM1 3SZ: not on the flood risk listSM1 3TL: not on the flood risk listSM1 3TT: not on the flood risk listSM1 3TU: not on the flood risk listSM1 3TX: not on the flood risk listSM1 3TY: not on the flood risk listSM1 3TZ: not on the flood risk listSM1 3JF: low flood risk at worstSM1 3JR: low flood risk at worstSM1 3HH: high flood risk Sutton NorthThe Wrythe Map of every postcode in the SM1 3 sector, by flood risk Of the 216 postcodes in the SM1 3 sector that ONS places, 1 have a home or business at high risk, 2 are at low risk at worst and 213 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Sutton North, The Wrythe. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Sutton NorthThe Wrythe
  • A home or business at high risk: 1
  • At medium risk at worst: 0
  • At low risk at worst: 2
  • At very low risk only: 0
  • Not on the at-risk list: 213

Of the 216 postcodes in the SM1 3 sector that ONS places, 1 have a home or business at high risk, 2 are at low risk at worst and 213 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 high risk

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

SM1 3HH9 at high 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.

SM1 3XQ

What do homes sell for in SM1 3?

Homes in SM1 3 sold for a typical £482,500 in the 12 months to August 2026, across 122 sales, down 6% on the 12 months before, HM Land Registry's figures show.

£482,500 typical price, the 12 months to August 2026
£513,500 12 months to August 2025
▼ down 6% on the 12 months before
  • Detached £612,500 6 sales
  • Semi-detached £550,000 51 sales
  • Terraced £465,000 36 sales
  • Flat or maisonette £265,000 29 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 SM1 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 SM1 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.

SM1 3AASM1 3ABSM1 3ADSM1 3AESM1 3AFSM1 3AGSM1 3AHSM1 3AJSM1 3ALSM1 3ANSM1 3AQSM1 3ASSM1 3ATSM1 3AUSM1 3AWSM1 3AXSM1 3AYSM1 3AZSM1 3BASM1 3BESM1 3BFSM1 3BGSM1 3BHSM1 3BJSM1 3BLSM1 3BNSM1 3BPSM1 3BQSM1 3BSSM1 3BTSM1 3BUSM1 3BWSM1 3BXSM1 3BYSM1 3BZSM1 3DASM1 3DBSM1 3DDSM1 3DESM1 3DFSM1 3DGSM1 3DHSM1 3DJSM1 3DLSM1 3DNSM1 3DPSM1 3DQSM1 3DRSM1 3DSSM1 3DTSM1 3DUSM1 3DWSM1 3DXSM1 3DYSM1 3DZSM1 3EASM1 3EBSM1 3EDSM1 3EESM1 3EFSM1 3EGSM1 3EHSM1 3EJSM1 3ELSM1 3ENSM1 3EQSM1 3ETSM1 3EUSM1 3EWSM1 3EXSM1 3EYSM1 3EZSM1 3HASM1 3HBSM1 3HESM1 3HGSM1 3HHSM1 3HJSM1 3HLSM1 3HNSM1 3HPSM1 3HQSM1 3HRSM1 3HSSM1 3HTSM1 3HUSM1 3HWSM1 3HYSM1 3HZSM1 3JASM1 3JBSM1 3JDSM1 3JESM1 3JFSM1 3JGSM1 3JHSM1 3JJSM1 3JLSM1 3JQSM1 3JRSM1 3JTSM1 3JXSM1 3JYSM1 3JZSM1 3LASM1 3LBSM1 3LDSM1 3LESM1 3LFSM1 3LGSM1 3LHSM1 3LJSM1 3LLSM1 3LPSM1 3LQSM1 3LRSM1 3LSSM1 3LTSM1 3LUSM1 3LWSM1 3LXSM1 3LYSM1 3LZSM1 3NASM1 3NBSM1 3NDSM1 3NESM1 3NFSM1 3NGSM1 3NHSM1 3NJSM1 3NLSM1 3NNSM1 3NQSM1 3NSSM1 3NTSM1 3NUSM1 3NWSM1 3NYSM1 3NZSM1 3PASM1 3PBSM1 3PDSM1 3PESM1 3PFSM1 3PGSM1 3PHSM1 3PJSM1 3PLSM1 3PNSM1 3PQSM1 3PSSM1 3PTSM1 3PWSM1 3PXSM1 3PYSM1 3PZSM1 3QBSM1 3QDSM1 3QESM1 3QFSM1 3QGSM1 3QHSM1 3QJSM1 3QLSM1 3QNSM1 3QPSM1 3QQSM1 3QRSM1 3QSSM1 3QTSM1 3QUSM1 3QWSM1 3RASM1 3RBSM1 3RDSM1 3RESM1 3RFSM1 3RGSM1 3RJSM1 3RLSM1 3RNSM1 3RPSM1 3RQSM1 3RRSM1 3RSSM1 3RTSM1 3RUSM1 3RWSM1 3RXSM1 3RYSM1 3RZSM1 3SASM1 3SBSM1 3SDSM1 3SESM1 3SHSM1 3SJSM1 3SLSM1 3SNSM1 3SPSM1 3SQSM1 3SRSM1 3SSSM1 3STSM1 3SUSM1 3SWSM1 3SXSM1 3SZSM1 3TLSM1 3TTSM1 3TUSM1 3TXSM1 3TYSM1 3TZSM1 3XQ

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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