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CM4 9

Postcode sector

233 live postcodes: 135 in Chelmsford, 94 in Brentwood and 4 in Basildon.

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 Chelmsford, which holds 58% of CM4 9’s postcodes. Open the map at CM4 9 for neighbourhoods and points. Open the map at CM4 9

MPs for CM4 9

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

5 of Chelmsford’s 113 neighbourhoods are in England’s most deprived 20%.

Chelmsford, the council that holds 58% of CM4 9

Average house price
£378,080
Down 2.3% in a year
HM Land Registry · Jul 2026
Median full-time pay
£46,179
39th highest paid of 348
ONS earnings survey · 2025
House price to pay
8.2×
123rd least affordable of 348
Worked out by Open Index
Deprivation score
13.1
65th least deprived of 296
MHCLG · England only

Everything about Chelmsford

Councils in CM4 9

Postcodes in CM4 9