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SW1Y 4

Postcode sector

71 live postcodes, all in Westminster.

A postcode has no figures of its own: each layer is published for whole councils, neighbourhoods or exact points. The figures below are for the whole of Westminster. Open the map at SW1Y 4 for neighbourhoods and points. Open the map at SW1Y 4

Your MP

As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

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Deprivation by neighbourhood

English Indices of Deprivation 2025

Most deprived 10%Least

29 of Westminster’s 123 neighbourhoods are in England’s most deprived 20%.

Westminster, the council that holds 100% of SW1Y 4

Average house price
£876,788
Down 20.7% in a year
HM Land Registry · Jul 2026
Median full-time pay
£52,610
5th highest paid of 348
ONS earnings survey · 2025
House price to pay
16.7×
2nd least affordable of 348
Worked out by Open Index
Deprivation score
23.9
Joint 92nd most deprived of 296
MHCLG · England only

Everything about Westminster

Postcodes in SW1Y 4