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, and which are new since 2020

Map of every postcode in the SW1Y 5 sector, by new since 2020 Of the 45 postcodes in the SW1Y 5 sector that ONS places, 1 are new since 2020 and 44 were in use before 2020. 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: before 2020SW1Y 5AD: before 2020SW1Y 5AF: before 2020SW1Y 5AG: before 2020SW1Y 5AH: before 2020SW1Y 5AN: before 2020SW1Y 5AQ: before 2020SW1Y 5AS: before 2020SW1Y 5AT: before 2020SW1Y 5AU: before 2020SW1Y 5AY: before 2020SW1Y 5BF: before 2020SW1Y 5BG: before 2020SW1Y 5BL: before 2020SW1Y 5BN: before 2020SW1Y 5BQ: before 2020SW1Y 5DG: before 2020SW1Y 5EA: before 2020SW1Y 5ED: before 2020SW1Y 5EP: before 2020SW1Y 5ER: before 2020SW1Y 5ES: before 2020SW1Y 5EW: before 2020SW1Y 5EY: before 2020SW1Y 5HD: before 2020SW1Y 5HS: before 2020SW1Y 5HU: before 2020SW1Y 5HZ: before 2020SW1Y 5JG: before 2020SW1Y 5JH: before 2020SW1Y 5JN: before 2020SW1Y 5JQ: before 2020SW1Y 5LP: before 2020SW1Y 5LU: before 2020SW1Y 5NG: before 2020SW1Y 5NQ: before 2020SW1Y 5NP: new since 2020 St James's Map of every postcode in the SW1Y 5 sector, by new since 2020 Of the 45 postcodes in the SW1Y 5 sector that ONS places, 1 are new since 2020 and 44 were in use before 2020. 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
  • New since 2020: 1
  • In use before 2020: 44

Of the 45 postcodes in the SW1Y 5 sector that ONS places, 1 are new since 2020 and 44 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.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

The newest postcode

SW1Y 5NPJuly 2025

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 4 sales of homes in SW1Y 5 in the 12 months to September 2026: too few to give a typical price.

  • Flat or maisonette 4 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 October 2026.

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: ONS Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed.

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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Where the facts on this page come from

Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Licence: Open Government Licence v3.0.

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