SW3 4 postcode sector in the SW3 district

SW3 4 is a sector of the SW3 district: every postcode that starts SW3 4. It has 150 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 SW3 4 sector, and which are new since 2020

Map of every postcode in the SW3 4 sector, by new since 2020 Of the 150 postcodes in the SW3 4 sector that ONS places, 1 are new since 2020 and 149 were in use before 2020. Places named: Royal Hospital. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A3216 SW3 4AA: before 2020SW3 4AB: before 2020SW3 4AD: before 2020SW3 4AE: before 2020SW3 4AF: before 2020SW3 4AH: before 2020SW3 4AJ: before 2020SW3 4AN: before 2020SW3 4AP: before 2020SW3 4AR: before 2020SW3 4AS: before 2020SW3 4AW: before 2020SW3 4BA: before 2020SW3 4BD: before 2020SW3 4BH: before 2020SW3 4BJ: before 2020SW3 4BL: before 2020SW3 4BN: before 2020SW3 4BP: before 2020SW3 4BT: before 2020SW3 4BU: before 2020SW3 4BX: before 2020SW3 4DA: before 2020SW3 4DH: before 2020SW3 4DJ: before 2020SW3 4DL: before 2020SW3 4DN: before 2020SW3 4DP: before 2020SW3 4DR: before 2020SW3 4DS: before 2020SW3 4DT: before 2020SW3 4DU: before 2020SW3 4DW: before 2020SW3 4DX: before 2020SW3 4DY: before 2020SW3 4EE: before 2020SW3 4EH: before 2020SW3 4EJ: before 2020SW3 4EN: before 2020SW3 4EP: before 2020SW3 4ER: before 2020SW3 4ET: before 2020SW3 4EU: before 2020SW3 4EW: before 2020SW3 4EX: before 2020SW3 4HA: before 2020SW3 4HH: before 2020SW3 4HJ: before 2020SW3 4HL: before 2020SW3 4HN: before 2020SW3 4HP: before 2020SW3 4HQ: before 2020SW3 4HS: before 2020SW3 4HT: before 2020SW3 4HW: before 2020SW3 4HY: before 2020SW3 4HZ: before 2020SW3 4JA: before 2020SW3 4JB: before 2020SW3 4JD: before 2020SW3 4JE: before 2020SW3 4JG: before 2020SW3 4JH: before 2020SW3 4JJ: before 2020SW3 4JL: before 2020SW3 4JP: before 2020SW3 4JR: before 2020SW3 4JS: before 2020SW3 4JT: before 2020SW3 4JU: before 2020SW3 4JX: before 2020SW3 4LA: before 2020SW3 4LE: before 2020SW3 4LF: before 2020SW3 4LG: before 2020SW3 4LH: before 2020SW3 4LJ: before 2020SW3 4LL: before 2020SW3 4LN: before 2020SW3 4LQ: before 2020SW3 4LW: before 2020SW3 4LX: before 2020SW3 4LY: before 2020SW3 4LZ: before 2020SW3 4NB: before 2020SW3 4ND: before 2020SW3 4NE: before 2020SW3 4NG: before 2020SW3 4NJ: before 2020SW3 4NL: before 2020SW3 4NP: before 2020SW3 4NR: before 2020SW3 4NT: before 2020SW3 4NW: before 2020SW3 4NX: before 2020SW3 4PA: before 2020SW3 4PL: before 2020SW3 4PW: before 2020SW3 4QA: before 2020SW3 4QB: before 2020SW3 4QD: before 2020SW3 4QE: before 2020SW3 4QF: before 2020SW3 4QG: before 2020SW3 4QH: before 2020SW3 4QJ: before 2020SW3 4QP: before 2020SW3 4QQ: before 2020SW3 4QS: before 2020SW3 4QX: before 2020SW3 4RB: before 2020SW3 4RD: before 2020SW3 4RP: before 2020SW3 4SL: before 2020SW3 4SR: before 2020SW3 4SW: before 2020SW3 4SX: before 2020SW3 4SY: before 2020SW3 4SZ: before 2020SW3 4TB: before 2020SW3 4TD: before 2020SW3 4TE: before 2020SW3 4TF: before 2020SW3 4TG: before 2020SW3 4TH: before 2020SW3 4TP: before 2020SW3 4TQ: before 2020SW3 4TR: before 2020SW3 4TW: before 2020SW3 4TX: before 2020SW3 4TZ: before 2020SW3 4UD: before 2020SW3 4UG: before 2020SW3 4UJ: before 2020SW3 4UP: before 2020SW3 4UT: before 2020SW3 4UU: before 2020SW3 4UY: before 2020SW3 4UZ: before 2020SW3 4XA: before 2020SW3 4XB: before 2020SW3 4XD: before 2020SW3 4XH: before 2020SW3 4AQ: new since 2020 Royal Hospital Map of every postcode in the SW3 4 sector, by new since 2020 Of the 150 postcodes in the SW3 4 sector that ONS places, 1 are new since 2020 and 149 were in use before 2020. Places named: Royal Hospital. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Royal Hospital
  • New since 2020: 1
  • In use before 2020: 149

Of the 150 postcodes in the SW3 4 sector that ONS places, 1 are new since 2020 and 149 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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; when each came into use: the same directory; 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 newest postcode

SW3 4AQJanuary 2024

What do homes sell for in SW3 4?

Homes in SW3 4 sold for a typical £1,410,000 in the 12 months to August 2026, across 45 sales, down 12% on the 12 months before, HM Land Registry's figures show.

£1,410,000 typical price, the 12 months to August 2026
£1,602,562 12 months to August 2025
▼ down 12% on the 12 months before
  • Terraced £3,900,000 15 sales
  • Flat or maisonette £1,090,000 30 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 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 SW3 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.

SW3 4AASW3 4ABSW3 4ADSW3 4AESW3 4AFSW3 4AHSW3 4AJSW3 4ANSW3 4APSW3 4AQSW3 4ARSW3 4ASSW3 4AWSW3 4BASW3 4BDSW3 4BHSW3 4BJSW3 4BLSW3 4BNSW3 4BPSW3 4BTSW3 4BUSW3 4BXSW3 4DASW3 4DHSW3 4DJSW3 4DLSW3 4DNSW3 4DPSW3 4DRSW3 4DSSW3 4DTSW3 4DUSW3 4DWSW3 4DXSW3 4DYSW3 4EESW3 4EHSW3 4EJSW3 4ENSW3 4EPSW3 4ERSW3 4ETSW3 4EUSW3 4EWSW3 4EXSW3 4HASW3 4HHSW3 4HJSW3 4HLSW3 4HNSW3 4HPSW3 4HQSW3 4HSSW3 4HTSW3 4HWSW3 4HYSW3 4HZSW3 4JASW3 4JBSW3 4JDSW3 4JESW3 4JGSW3 4JHSW3 4JJSW3 4JLSW3 4JPSW3 4JRSW3 4JSSW3 4JTSW3 4JUSW3 4JXSW3 4LASW3 4LESW3 4LFSW3 4LGSW3 4LHSW3 4LJSW3 4LLSW3 4LNSW3 4LQSW3 4LSSW3 4LWSW3 4LXSW3 4LYSW3 4LZSW3 4NBSW3 4NDSW3 4NESW3 4NGSW3 4NJSW3 4NLSW3 4NPSW3 4NRSW3 4NTSW3 4NWSW3 4NXSW3 4PASW3 4PLSW3 4PWSW3 4QASW3 4QBSW3 4QDSW3 4QESW3 4QFSW3 4QGSW3 4QHSW3 4QJSW3 4QPSW3 4QQSW3 4QSSW3 4QXSW3 4QYSW3 4QZSW3 4RASW3 4RBSW3 4RDSW3 4RPSW3 4RYSW3 4SLSW3 4SRSW3 4SWSW3 4SXSW3 4SYSW3 4SZSW3 4TASW3 4TBSW3 4TDSW3 4TESW3 4TFSW3 4TGSW3 4THSW3 4TPSW3 4TQSW3 4TRSW3 4TWSW3 4TXSW3 4TZSW3 4UDSW3 4UGSW3 4UJSW3 4UPSW3 4UTSW3 4UUSW3 4UYSW3 4UZSW3 4XASW3 4XBSW3 4XDSW3 4XH

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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