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SL4 9

Postcode sector

33 live postcodes, all in Windsor and Maidenhead.

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 Windsor and Maidenhead. Open the map at SL4 9 for neighbourhoods and points. Open the map at SL4 9

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

0 of Windsor and Maidenhead’s 89 neighbourhoods are in England’s most deprived 20%.

Windsor and Maidenhead, the council that holds 100% of SL4 9

Average house price
£575,036
Down 3.9% in a year
HM Land Registry · Jul 2026
Median full-time pay
£47,387
27th highest paid of 348
ONS earnings survey · 2025
House price to pay
12.1×
20th least affordable of 348
Worked out by Open Index
Deprivation score
8.9
12th least deprived of 296
MHCLG · England only

Everything about Windsor and Maidenhead

Postcodes in SL4 9