SW1P 3 postcode sector in the SW1P district

SW1P 3 is a sector of the SW1P district: every postcode that starts SW1P 3. It has 96 postcodes in use, 27 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 SW1P 3 sector, by flood risk

Map of every postcode in the SW1P 3 sector, by flood risk Of the 96 postcodes in the SW1P 3 sector that ONS places, 81 are at very low risk only and 15 are not on the Environment Agency's at-risk list. Places named: St James's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A3212A302A202A3203 SW1P 3AA: not on the flood risk listSW1P 3AD: not on the flood risk listSW1P 3HA: not on the flood risk listSW1P 3HX: not on the flood risk listSW1P 3LB: not on the flood risk listSW1P 3RB: not on the flood risk listSW1P 3WP: not on the flood risk listSW1P 3AE: very low flood risk onlySW1P 3AF: very low flood risk onlySW1P 3AT: very low flood risk onlySW1P 3AY: very low flood risk onlySW1P 3AZ: very low flood risk onlySW1P 3BD: very low flood risk onlySW1P 3BP: very low flood risk onlySW1P 3BQ: very low flood risk onlySW1P 3BT: very low flood risk onlySW1P 3BU: very low flood risk onlySW1P 3DP: very low flood risk onlySW1P 3DQ: very low flood risk onlySW1P 3DR: very low flood risk onlySW1P 3DW: very low flood risk onlySW1P 3EE: very low flood risk onlySW1P 3EP: very low flood risk onlySW1P 3ER: very low flood risk onlySW1P 3HB: very low flood risk onlySW1P 3HF: very low flood risk onlySW1P 3HL: very low flood risk onlySW1P 3HN: very low flood risk onlySW1P 3HP: very low flood risk onlySW1P 3HQ: very low flood risk onlySW1P 3HS: very low flood risk onlySW1P 3HT: very low flood risk onlySW1P 3HZ: very low flood risk onlySW1P 3JA: very low flood risk onlySW1P 3JH: very low flood risk onlySW1P 3JS: very low flood risk onlySW1P 3JT: very low flood risk onlySW1P 3JU: very low flood risk onlySW1P 3JX: very low flood risk onlySW1P 3JY: very low flood risk onlySW1P 3LA: very low flood risk onlySW1P 3LD: very low flood risk onlySW1P 3LL: very low flood risk onlySW1P 3LN: very low flood risk onlySW1P 3LR: very low flood risk onlySW1P 3LT: very low flood risk onlySW1P 3LW: very low flood risk onlySW1P 3LZ: very low flood risk onlySW1P 3NB: very low flood risk onlySW1P 3NE: very low flood risk onlySW1P 3NG: very low flood risk onlySW1P 3NP: very low flood risk onlySW1P 3NQ: very low flood risk onlySW1P 3NR: very low flood risk onlySW1P 3PA: very low flood risk onlySW1P 3PB: very low flood risk onlySW1P 3PD: very low flood risk onlySW1P 3PF: very low flood risk onlySW1P 3PG: very low flood risk onlySW1P 3PH: very low flood risk onlySW1P 3PJ: very low flood risk onlySW1P 3PL: very low flood risk onlySW1P 3QB: very low flood risk onlySW1P 3QE: very low flood risk onlySW1P 3QH: very low flood risk onlySW1P 3QL: very low flood risk onlySW1P 3QX: very low flood risk onlySW1P 3QY: very low flood risk onlySW1P 3QZ: very low flood risk onlySW1P 3RA: very low flood risk onlySW1P 3RD: very low flood risk onlySW1P 3RE: very low flood risk onlySW1P 3RF: very low flood risk onlySW1P 3RT: very low flood risk onlySW1P 3RX: very low flood risk onlySW1P 3SE: very low flood risk onlySW1P 3SH: very low flood risk only St James's Map of every postcode in the SW1P 3 sector, by flood risk Of the 96 postcodes in the SW1P 3 sector that ONS places, 81 are at very low risk only and 15 are not on the Environment Agency's at-risk list. Places named: St James's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A3212 St James's
  • 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: 81
  • Not on the at-risk list: 15

Of the 96 postcodes in the SW1P 3 sector that ONS places, 81 are at very low risk only and 15 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

What do homes sell for in SW1P 3?

Homes in SW1P 3 sold for a typical £805,000 in the 12 months to August 2026, across 13 sales, down 19.5% on the 12 months before, HM Land Registry's figures show.

£805,000 typical price, the 12 months to August 2026
£1,000,000 12 months to August 2025
▼ down 19.5% on the 12 months before
  • Semi-detached 1 sale, too few to price
  • Terraced 1 sale, too few to price
  • Flat or maisonette £800,000 11 sales

Standard sales of homes at market value at the postcodes that start SW1P 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 SW1P 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.

SW1P 3AASW1P 3ADSW1P 3AESW1P 3AFSW1P 3ANSW1P 3ATSW1P 3AYSW1P 3AZSW1P 3BDSW1P 3BLSW1P 3BNSW1P 3BPSW1P 3BQSW1P 3BTSW1P 3BUSW1P 3DJSW1P 3DNSW1P 3DPSW1P 3DQSW1P 3DRSW1P 3DSSW1P 3DWSW1P 3EESW1P 3EPSW1P 3ERSW1P 3EUSW1P 3HASW1P 3HBSW1P 3HESW1P 3HFSW1P 3HLSW1P 3HNSW1P 3HPSW1P 3HQSW1P 3HSSW1P 3HTSW1P 3HXSW1P 3HZSW1P 3JASW1P 3JHSW1P 3JJSW1P 3JQSW1P 3JRSW1P 3JSSW1P 3JTSW1P 3JUSW1P 3JXSW1P 3JYSW1P 3LASW1P 3LBSW1P 3LDSW1P 3LLSW1P 3LNSW1P 3LRSW1P 3LTSW1P 3LWSW1P 3LZSW1P 3NBSW1P 3NESW1P 3NGSW1P 3NPSW1P 3NQSW1P 3NRSW1P 3NYSW1P 3NZSW1P 3PASW1P 3PBSW1P 3PDSW1P 3PFSW1P 3PGSW1P 3PHSW1P 3PJSW1P 3PLSW1P 3PQSW1P 3PSSW1P 3QBSW1P 3QESW1P 3QHSW1P 3QLSW1P 3QXSW1P 3QYSW1P 3QZSW1P 3RASW1P 3RBSW1P 3RDSW1P 3RESW1P 3RFSW1P 3RTSW1P 3RXSW1P 3SESW1P 3SFSW1P 3SHSW1P 3WPSW1P 3WTSW1P 3XASW1P 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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