SW1Y 5 postcode sector in the SW1Y district

SW1Y 5 is a sector of the SW1Y district: every postcode that starts SW1Y 5. It has 45 postcodes in use, 17 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 SW1Y 5 sector, by flood risk

Map of every postcode in the SW1Y 5 sector, by flood risk Of the 45 postcodes in the SW1Y 5 sector that ONS places, 45 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: St James's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A400 SW1Y 5AA: not on the flood risk listSW1Y 5AD: not on the flood risk listSW1Y 5AF: not on the flood risk listSW1Y 5AG: not on the flood risk listSW1Y 5AH: not on the flood risk listSW1Y 5AN: not on the flood risk listSW1Y 5AQ: not on the flood risk listSW1Y 5AS: not on the flood risk listSW1Y 5AT: not on the flood risk listSW1Y 5AU: not on the flood risk listSW1Y 5AY: not on the flood risk listSW1Y 5BF: not on the flood risk listSW1Y 5BG: not on the flood risk listSW1Y 5BL: not on the flood risk listSW1Y 5BN: not on the flood risk listSW1Y 5BQ: not on the flood risk listSW1Y 5DG: not on the flood risk listSW1Y 5EA: not on the flood risk listSW1Y 5ED: not on the flood risk listSW1Y 5EP: not on the flood risk listSW1Y 5ER: not on the flood risk listSW1Y 5ES: not on the flood risk listSW1Y 5EW: not on the flood risk listSW1Y 5EY: not on the flood risk listSW1Y 5HD: not on the flood risk listSW1Y 5HS: not on the flood risk listSW1Y 5HU: not on the flood risk listSW1Y 5HZ: not on the flood risk listSW1Y 5JG: not on the flood risk listSW1Y 5JH: not on the flood risk listSW1Y 5JN: not on the flood risk listSW1Y 5JQ: not on the flood risk listSW1Y 5LP: not on the flood risk listSW1Y 5LU: not on the flood risk listSW1Y 5NG: not on the flood risk listSW1Y 5NP: not on the flood risk listSW1Y 5NQ: not on the flood risk list St James's Map of every postcode in the SW1Y 5 sector, by flood risk Of the 45 postcodes in the SW1Y 5 sector that ONS places, 45 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: St James's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. 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: 0
  • Not on the at-risk list: 45

Of the 45 postcodes in the SW1Y 5 sector that ONS places, 45 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.

SW1Y 5ZQ

What do homes sell for in SW1Y 5?

HM Land Registry records 3 sales of homes in SW1Y 5 in the 12 months to August 2026: too few to give a typical price.

  • Flat or maisonette 3 sales, too few to price

Standard sales of homes at market value at the postcodes that start SW1Y 5. 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 SW1Y 5

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.

SW1Y 5AASW1Y 5ADSW1Y 5AFSW1Y 5AGSW1Y 5AHSW1Y 5ANSW1Y 5APSW1Y 5AQSW1Y 5ASSW1Y 5ATSW1Y 5AUSW1Y 5AYSW1Y 5BDSW1Y 5BFSW1Y 5BGSW1Y 5BJSW1Y 5BLSW1Y 5BNSW1Y 5BQSW1Y 5BSSW1Y 5DGSW1Y 5DLSW1Y 5EASW1Y 5EDSW1Y 5EPSW1Y 5ERSW1Y 5ESSW1Y 5EWSW1Y 5EYSW1Y 5HDSW1Y 5HSSW1Y 5HUSW1Y 5HXSW1Y 5HYSW1Y 5HZSW1Y 5JGSW1Y 5JHSW1Y 5JNSW1Y 5JQSW1Y 5LPSW1Y 5LUSW1Y 5NGSW1Y 5NPSW1Y 5NQSW1Y 5ZQ

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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