SW18 3 postcode sector in the SW18 district

SW18 3 is a sector of the SW18 district: every postcode that starts SW18 3. It has 210 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 SW18 3 sector, by flood risk

Map of every postcode in the SW18 3 sector, by flood risk Of the 210 postcodes in the SW18 3 sector that ONS places, 13 are at medium risk at worst, 16 are at low risk at worst, 6 are at very low risk only and 175 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 13 postcodes at high or medium risk. Places named: Wandsworth Common, Wandle. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A214 SW18 3AE: not on the flood risk listSW18 3AF: not on the flood risk listSW18 3AG: not on the flood risk listSW18 3AJ: not on the flood risk listSW18 3AP: not on the flood risk listSW18 3AQ: not on the flood risk listSW18 3AR: not on the flood risk listSW18 3AS: not on the flood risk listSW18 3AT: not on the flood risk listSW18 3AU: not on the flood risk listSW18 3AW: not on the flood risk listSW18 3AX: not on the flood risk listSW18 3AY: not on the flood risk listSW18 3AZ: not on the flood risk listSW18 3BA: not on the flood risk listSW18 3BB: not on the flood risk listSW18 3BD: not on the flood risk listSW18 3BE: not on the flood risk listSW18 3BF: not on the flood risk listSW18 3BH: not on the flood risk listSW18 3BT: not on the flood risk listSW18 3BU: not on the flood risk listSW18 3BX: not on the flood risk listSW18 3BY: not on the flood risk listSW18 3BZ: not on the flood risk listSW18 3DA: not on the flood risk listSW18 3DB: not on the flood risk listSW18 3DD: not on the flood risk listSW18 3DE: not on the flood risk listSW18 3DF: not on the flood risk listSW18 3DH: not on the flood risk listSW18 3DN: not on the flood risk listSW18 3DP: not on the flood risk listSW18 3DQ: not on the flood risk listSW18 3DR: not on the flood risk listSW18 3DS: not on the flood risk listSW18 3DT: not on the flood risk listSW18 3DU: not on the flood risk listSW18 3DW: not on the flood risk listSW18 3DX: not on the flood risk listSW18 3EN: not on the flood risk listSW18 3EP: not on the flood risk listSW18 3ER: not on the flood risk listSW18 3ES: not on the flood risk listSW18 3ET: not on the flood risk listSW18 3EU: not on the flood risk listSW18 3EX: not on the flood risk listSW18 3EY: not on the flood risk listSW18 3EZ: not on the flood risk listSW18 3FR: not on the flood risk listSW18 3FS: not on the flood risk listSW18 3HA: not on the flood risk listSW18 3HB: not on the flood risk listSW18 3HD: not on the flood risk listSW18 3HE: not on the flood risk listSW18 3HF: not on the flood risk listSW18 3HG: not on the flood risk listSW18 3HH: not on the flood risk listSW18 3HJ: not on the flood risk listSW18 3HP: not on the flood risk listSW18 3HQ: not on the flood risk listSW18 3HR: not on the flood risk listSW18 3HS: not on the flood risk listSW18 3HT: not on the flood risk listSW18 3HU: not on the flood risk listSW18 3HX: not on the flood risk listSW18 3HY: not on the flood risk listSW18 3HZ: not on the flood risk listSW18 3JB: not on the flood risk listSW18 3JD: not on the flood risk listSW18 3JE: not on the flood risk listSW18 3JG: not on the flood risk listSW18 3JH: not on the flood risk listSW18 3JJ: not on the flood risk listSW18 3JL: not on the flood risk listSW18 3JN: not on the flood risk listSW18 3JP: not on the flood risk listSW18 3JR: not on the flood risk listSW18 3JS: not on the flood risk listSW18 3JT: not on the flood risk listSW18 3JU: not on the flood risk listSW18 3JW: not on the flood risk listSW18 3JX: not on the flood risk listSW18 3JY: not on the flood risk listSW18 3JZ: not on the flood risk listSW18 3LG: not on the flood risk listSW18 3LH: not on the flood risk listSW18 3LJ: not on the flood risk listSW18 3LL: not on the flood risk listSW18 3LN: not on the flood risk listSW18 3LP: not on the flood risk listSW18 3LQ: not on the flood risk listSW18 3LR: not on the flood risk listSW18 3LS: not on the flood risk listSW18 3LT: not on the flood risk listSW18 3LU: not on the flood risk listSW18 3LW: not on the flood risk listSW18 3NB: not on the flood risk listSW18 3ND: not on the flood risk listSW18 3NE: not on the flood risk listSW18 3NF: not on the flood risk listSW18 3NG: not on the flood risk listSW18 3NH: not on the flood risk listSW18 3NJ: not on the flood risk listSW18 3NL: not on the flood risk listSW18 3NN: not on the flood risk listSW18 3NP: not on the flood risk listSW18 3NQ: not on the flood risk listSW18 3NR: not on the flood risk listSW18 3NS: not on the flood risk listSW18 3NW: not on the flood risk listSW18 3PA: not on the flood risk listSW18 3PB: not on the flood risk listSW18 3PD: not on the flood risk listSW18 3PE: not on the flood risk listSW18 3PF: not on the flood risk listSW18 3PG: not on the flood risk listSW18 3PH: not on the flood risk listSW18 3PJ: not on the flood risk listSW18 3PL: not on the flood risk listSW18 3PN: not on the flood risk listSW18 3PP: not on the flood risk listSW18 3PQ: not on the flood risk listSW18 3PR: not on the flood risk listSW18 3PS: not on the flood risk listSW18 3PT: not on the flood risk listSW18 3PU: not on the flood risk listSW18 3PW: not on the flood risk listSW18 3PX: not on the flood risk listSW18 3PY: not on the flood risk listSW18 3QD: not on the flood risk listSW18 3QE: not on the flood risk listSW18 3QG: not on the flood risk listSW18 3QH: not on the flood risk listSW18 3QJ: not on the flood risk listSW18 3QL: not on the flood risk listSW18 3QP: not on the flood risk listSW18 3QQ: not on the flood risk listSW18 3QS: not on the flood risk listSW18 3QT: not on the flood risk listSW18 3QU: not on the flood risk listSW18 3QW: not on the flood risk listSW18 3QX: not on the flood risk listSW18 3QY: not on the flood risk listSW18 3QZ: not on the flood risk listSW18 3RA: not on the flood risk listSW18 3RG: not on the flood risk listSW18 3RH: not on the flood risk listSW18 3RJ: not on the flood risk listSW18 3RL: not on the flood risk listSW18 3RN: not on the flood risk listSW18 3RP: not on the flood risk listSW18 3RQ: not on the flood risk listSW18 3RR: not on the flood risk listSW18 3RS: not on the flood risk listSW18 3RT: not on the flood risk listSW18 3RW: not on the flood risk listSW18 3SA: not on the flood risk listSW18 3SD: not on the flood risk listSW18 3SE: not on the flood risk listSW18 3SF: not on the flood risk listSW18 3SG: not on the flood risk listSW18 3SH: not on the flood risk listSW18 3SJ: not on the flood risk listSW18 3SL: not on the flood risk listSW18 3SN: not on the flood risk listSW18 3SP: not on the flood risk listSW18 3SW: not on the flood risk listSW18 3SX: not on the flood risk listSW18 3TA: not on the flood risk listSW18 3TD: not on the flood risk listSW18 3TJ: not on the flood risk listSW18 3TQ: not on the flood risk listSW18 3QF: very low flood risk onlySW18 3QN: very low flood risk onlySW18 3QR: very low flood risk onlySW18 3SY: very low flood risk onlySW18 3SZ: very low flood risk onlySW18 3TB: very low flood risk onlySW18 3AH: low flood risk at worstSW18 3BL: low flood risk at worstSW18 3BP: low flood risk at worstSW18 3BS: low flood risk at worstSW18 3BW: low flood risk at worstSW18 3DY: low flood risk at worstSW18 3DZ: low flood risk at worstSW18 3EA: low flood risk at worstSW18 3ED: low flood risk at worstSW18 3EH: low flood risk at worstSW18 3NY: low flood risk at worstSW18 3NZ: low flood risk at worstSW18 3TE: low flood risk at worstSW18 3TF: low flood risk at worstSW18 3TG: low flood risk at worstSW18 3TH: low flood risk at worstSW18 3BG: medium flood risk at worstSW18 3BJ: medium flood risk at worstSW18 3BN: medium flood risk at worstSW18 3BQ: medium flood risk at worstSW18 3DG: medium flood risk at worstSW18 3DL: medium flood risk at worstSW18 3EB: medium flood risk at worstSW18 3EE: medium flood risk at worstSW18 3EF: medium flood risk at worstSW18 3EG: medium flood risk at worstSW18 3EJ: medium flood risk at worstSW18 3EL: medium flood risk at worstSW18 3EQ: medium flood risk at worst Wandsworth CommonWandle 13 postcodes at high or medium risk, outlined: this goes to SW18 3EB, the one with most homes and businesses at high risk13 postcodes at high or medium risk Map of every postcode in the SW18 3 sector, by flood risk Of the 210 postcodes in the SW18 3 sector that ONS places, 13 are at medium risk at worst, 16 are at low risk at worst, 6 are at very low risk only and 175 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 13 postcodes at high or medium risk. Places named: Wandsworth Common, Wandle. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Wandsworth CommonWandle
  • A home or business at high risk: 0
  • At medium risk at worst: 13
  • At low risk at worst: 16
  • At very low risk only: 6
  • Not on the at-risk list: 175
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 210 postcodes in the SW18 3 sector that ONS places, 13 are at medium risk at worst, 16 are at low risk at worst, 6 are at very low risk only and 175 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. 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

13 postcodes here are at medium risk at worst. These are the 12 with the most homes and businesses at that risk.

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

SW18 3EB40 at medium riskSW18 3EJ32 at medium riskSW18 3EG30 at medium riskSW18 3EL24 at medium riskSW18 3EQ18 at medium riskSW18 3DG17 at medium riskSW18 3BG15 at medium riskSW18 3BN11 at medium riskSW18 3BQ8 at medium riskSW18 3DL8 at medium riskSW18 3EF4 at medium riskSW18 3BJ2 at medium risk

Where the postcodes at high or medium risk lie together

  • 13 postcodes at high or medium risk, outlined on the map. SW18 3EB, is the one with most homes and businesses at high risk.

What do homes sell for in SW18 3?

Homes in SW18 3 sold for a typical £725,000 in the 12 months to August 2026, across 206 sales, down 1.4% on the 12 months before, HM Land Registry's figures show.

£725,000 typical price, the 12 months to August 2026
£735,000 12 months to August 2025
▼ down 1.4% on the 12 months before
  • Detached 4 sales, too few to price
  • Semi-detached £1,720,000 21 sales
  • Terraced £1,226,500 62 sales
  • Flat or maisonette £590,000 119 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 SW18 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 SW18 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.

SW18 3AESW18 3AFSW18 3AGSW18 3AHSW18 3AJSW18 3APSW18 3AQSW18 3ARSW18 3ASSW18 3ATSW18 3AUSW18 3AWSW18 3AXSW18 3AYSW18 3AZSW18 3BASW18 3BBSW18 3BDSW18 3BESW18 3BFSW18 3BGSW18 3BHSW18 3BJSW18 3BLSW18 3BNSW18 3BPSW18 3BQSW18 3BSSW18 3BTSW18 3BUSW18 3BWSW18 3BXSW18 3BYSW18 3BZSW18 3DASW18 3DBSW18 3DDSW18 3DESW18 3DFSW18 3DGSW18 3DHSW18 3DLSW18 3DNSW18 3DPSW18 3DQSW18 3DRSW18 3DSSW18 3DTSW18 3DUSW18 3DWSW18 3DXSW18 3DYSW18 3DZSW18 3EASW18 3EBSW18 3EDSW18 3EESW18 3EFSW18 3EGSW18 3EHSW18 3EJSW18 3ELSW18 3ENSW18 3EPSW18 3EQSW18 3ERSW18 3ESSW18 3ETSW18 3EUSW18 3EWSW18 3EXSW18 3EYSW18 3EZSW18 3FRSW18 3FSSW18 3HASW18 3HBSW18 3HDSW18 3HESW18 3HFSW18 3HGSW18 3HHSW18 3HJSW18 3HPSW18 3HQSW18 3HRSW18 3HSSW18 3HTSW18 3HUSW18 3HXSW18 3HYSW18 3HZSW18 3JBSW18 3JDSW18 3JESW18 3JGSW18 3JHSW18 3JJSW18 3JLSW18 3JNSW18 3JPSW18 3JRSW18 3JSSW18 3JTSW18 3JUSW18 3JWSW18 3JXSW18 3JYSW18 3JZSW18 3LGSW18 3LHSW18 3LJSW18 3LLSW18 3LNSW18 3LPSW18 3LQSW18 3LRSW18 3LSSW18 3LTSW18 3LUSW18 3LWSW18 3NBSW18 3NDSW18 3NESW18 3NFSW18 3NGSW18 3NHSW18 3NJSW18 3NLSW18 3NNSW18 3NPSW18 3NQSW18 3NRSW18 3NSSW18 3NWSW18 3NYSW18 3NZSW18 3PASW18 3PBSW18 3PDSW18 3PESW18 3PFSW18 3PGSW18 3PHSW18 3PJSW18 3PLSW18 3PNSW18 3PPSW18 3PQSW18 3PRSW18 3PSSW18 3PTSW18 3PUSW18 3PWSW18 3PXSW18 3PYSW18 3QDSW18 3QESW18 3QFSW18 3QGSW18 3QHSW18 3QJSW18 3QLSW18 3QNSW18 3QPSW18 3QQSW18 3QRSW18 3QSSW18 3QTSW18 3QUSW18 3QWSW18 3QXSW18 3QYSW18 3QZSW18 3RASW18 3RGSW18 3RHSW18 3RJSW18 3RLSW18 3RNSW18 3RPSW18 3RQSW18 3RRSW18 3RSSW18 3RTSW18 3RWSW18 3SASW18 3SDSW18 3SESW18 3SFSW18 3SGSW18 3SHSW18 3SJSW18 3SLSW18 3SNSW18 3SPSW18 3SSSW18 3SWSW18 3SXSW18 3SYSW18 3SZSW18 3TASW18 3TBSW18 3TDSW18 3TESW18 3TFSW18 3TGSW18 3THSW18 3TJSW18 3TQ

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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