SW3 3 postcode sector in the SW3 district

SW3 3 is a sector of the SW3 district: every postcode that starts SW3 3. It has 174 postcodes in use, 4 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 SW3 3 sector, by flood risk

Map of every postcode in the SW3 3 sector, by flood risk Of the 174 postcodes in the SW3 3 sector that ONS places, 174 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Brompton & Hans Town, Stanley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A308 SW3 3AA: not on the flood risk listSW3 3AB: not on the flood risk listSW3 3AD: not on the flood risk listSW3 3AE: not on the flood risk listSW3 3AG: not on the flood risk listSW3 3AH: not on the flood risk listSW3 3AJ: not on the flood risk listSW3 3AL: not on the flood risk listSW3 3AP: not on the flood risk listSW3 3AU: not on the flood risk listSW3 3BP: not on the flood risk listSW3 3BS: not on the flood risk listSW3 3BU: not on the flood risk listSW3 3BX: not on the flood risk listSW3 3DB: not on the flood risk listSW3 3DD: not on the flood risk listSW3 3DH: not on the flood risk listSW3 3DJ: not on the flood risk listSW3 3DL: not on the flood risk listSW3 3DZ: not on the flood risk listSW3 3EA: not on the flood risk listSW3 3HA: not on the flood risk listSW3 3HB: not on the flood risk listSW3 3HD: not on the flood risk listSW3 3HT: not on the flood risk listSW3 3HU: not on the flood risk listSW3 3HX: not on the flood risk listSW3 3JA: not on the flood risk listSW3 3JB: not on the flood risk listSW3 3JD: not on the flood risk listSW3 3JE: not on the flood risk listSW3 3JF: not on the flood risk listSW3 3JU: not on the flood risk listSW3 3JX: not on the flood risk listSW3 3JY: not on the flood risk listSW3 3LA: not on the flood risk listSW3 3LB: not on the flood risk listSW3 3LD: not on the flood risk listSW3 3LF: not on the flood risk listSW3 3LG: not on the flood risk listSW3 3LH: not on the flood risk listSW3 3LL: not on the flood risk listSW3 3LP: not on the flood risk listSW3 3LU: not on the flood risk listSW3 3LZ: not on the flood risk listSW3 3NA: not on the flood risk listSW3 3NB: not on the flood risk listSW3 3NG: not on the flood risk listSW3 3NH: not on the flood risk listSW3 3NP: not on the flood risk listSW3 3NR: not on the flood risk listSW3 3NS: not on the flood risk listSW3 3NT: not on the flood risk listSW3 3NU: not on the flood risk listSW3 3NX: not on the flood risk listSW3 3NY: not on the flood risk listSW3 3NZ: not on the flood risk listSW3 3PA: not on the flood risk listSW3 3PD: not on the flood risk listSW3 3PF: not on the flood risk listSW3 3PG: not on the flood risk listSW3 3PP: not on the flood risk listSW3 3PQ: not on the flood risk listSW3 3PS: not on the flood risk listSW3 3PX: not on the flood risk listSW3 3PY: not on the flood risk listSW3 3PZ: not on the flood risk listSW3 3QA: not on the flood risk listSW3 3QB: not on the flood risk listSW3 3QD: not on the flood risk listSW3 3QE: not on the flood risk listSW3 3QF: not on the flood risk listSW3 3QG: not on the flood risk listSW3 3QH: not on the flood risk listSW3 3QP: not on the flood risk listSW3 3QQ: not on the flood risk listSW3 3QR: not on the flood risk listSW3 3QS: not on the flood risk listSW3 3QT: not on the flood risk listSW3 3QU: not on the flood risk listSW3 3QX: not on the flood risk listSW3 3QY: not on the flood risk listSW3 3QZ: not on the flood risk listSW3 3RA: not on the flood risk listSW3 3RB: not on the flood risk listSW3 3RD: not on the flood risk listSW3 3RE: not on the flood risk listSW3 3RF: not on the flood risk listSW3 3RG: not on the flood risk listSW3 3RH: not on the flood risk listSW3 3RP: not on the flood risk listSW3 3RS: not on the flood risk listSW3 3RT: not on the flood risk listSW3 3RU: not on the flood risk listSW3 3RX: not on the flood risk listSW3 3SD: not on the flood risk listSW3 3SE: not on the flood risk listSW3 3SF: not on the flood risk listSW3 3SG: not on the flood risk listSW3 3SH: not on the flood risk listSW3 3SP: not on the flood risk listSW3 3SQ: not on the flood risk listSW3 3SR: not on the flood risk listSW3 3ST: not on the flood risk listSW3 3SU: not on the flood risk listSW3 3SX: not on the flood risk listSW3 3TA: not on the flood risk listSW3 3TB: not on the flood risk listSW3 3TD: not on the flood risk listSW3 3TH: not on the flood risk listSW3 3TJ: not on the flood risk listSW3 3TP: not on the flood risk listSW3 3TQ: not on the flood risk listSW3 3TR: not on the flood risk listSW3 3TS: not on the flood risk listSW3 3TT: not on the flood risk listSW3 3TU: not on the flood risk listSW3 3TW: not on the flood risk listSW3 3TX: not on the flood risk listSW3 3TY: not on the flood risk listSW3 3UB: not on the flood risk listSW3 3UD: not on the flood risk list Brompton & Hans TownStanley Map of every postcode in the SW3 3 sector, by flood risk Of the 174 postcodes in the SW3 3 sector that ONS places, 174 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Brompton & Hans Town, Stanley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Brompton & Hans TownStanley
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 174

Of the 174 postcodes in the SW3 3 sector that ONS places, 174 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

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.

SW3 3ZQ

What do homes sell for in SW3 3?

Homes in SW3 3 sold for a typical £950,000 in the 12 months to August 2026, across 45 sales, up 15.8% on the 12 months before, HM Land Registry's figures show.

£950,000 typical price, the 12 months to August 2026
£820,275 12 months to August 2025
▲ up 15.8% on the 12 months before
  • Terraced £2,787,500 10 sales
  • Flat or maisonette £640,000 35 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 SW3 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 SW3 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.

SW3 3AASW3 3ABSW3 3ADSW3 3AESW3 3AGSW3 3AHSW3 3AJSW3 3ALSW3 3APSW3 3AUSW3 3AXSW3 3AYSW3 3AZSW3 3BASW3 3BBSW3 3BDSW3 3BESW3 3BGSW3 3BHSW3 3BPSW3 3BQSW3 3BSSW3 3BUSW3 3BXSW3 3DBSW3 3DDSW3 3DHSW3 3DJSW3 3DLSW3 3DNSW3 3DPSW3 3DRSW3 3DSSW3 3DTSW3 3DUSW3 3DWSW3 3DXSW3 3DYSW3 3DZSW3 3EASW3 3EESW3 3EFSW3 3EGSW3 3EHSW3 3EJSW3 3ELSW3 3ENSW3 3EPSW3 3EQSW3 3ERSW3 3ESSW3 3EUSW3 3EWSW3 3HASW3 3HBSW3 3HDSW3 3HESW3 3HFSW3 3HGSW3 3HHSW3 3HJSW3 3HNSW3 3HTSW3 3HUSW3 3HWSW3 3HXSW3 3JASW3 3JBSW3 3JDSW3 3JESW3 3JFSW3 3JGSW3 3JHSW3 3JJSW3 3JLSW3 3JNSW3 3JPSW3 3JQSW3 3JRSW3 3JUSW3 3JWSW3 3JXSW3 3JYSW3 3LASW3 3LBSW3 3LDSW3 3LESW3 3LFSW3 3LGSW3 3LHSW3 3LLSW3 3LPSW3 3LUSW3 3LZSW3 3NASW3 3NBSW3 3NGSW3 3NHSW3 3NPSW3 3NRSW3 3NSSW3 3NTSW3 3NUSW3 3NXSW3 3NYSW3 3NZSW3 3PASW3 3PDSW3 3PFSW3 3PGSW3 3PPSW3 3PQSW3 3PRSW3 3PSSW3 3PWSW3 3PXSW3 3PYSW3 3PZSW3 3QASW3 3QBSW3 3QDSW3 3QESW3 3QFSW3 3QGSW3 3QHSW3 3QPSW3 3QQSW3 3QRSW3 3QSSW3 3QTSW3 3QUSW3 3QXSW3 3QYSW3 3QZSW3 3RASW3 3RBSW3 3RDSW3 3RESW3 3RFSW3 3RGSW3 3RHSW3 3RPSW3 3RSSW3 3RTSW3 3RUSW3 3RXSW3 3SDSW3 3SESW3 3SFSW3 3SGSW3 3SHSW3 3SPSW3 3SQSW3 3SRSW3 3STSW3 3SUSW3 3SXSW3 3TASW3 3TBSW3 3TDSW3 3THSW3 3TJSW3 3TPSW3 3TQSW3 3TRSW3 3TSSW3 3TTSW3 3TUSW3 3TWSW3 3TXSW3 3TYSW3 3UBSW3 3UDSW3 3ZQ

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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