UB4 postcode district

UB4 holds 704 live postcodes around Hayes, in Hillingdon.

No listed town or village has its centre in UB4; the nearest are on the neighbouring districts below.

Wards

Westminster constituency

Every UB4 postcode falls in Hayes and Harlington.

Deprivation

The middle postcode here sits in decile 4 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 49% of this district's postcodes sit in the most deprived three deciles, 0% in the least deprived three.

Deprivation deciles describe the LSOA neighbourhood each postcode sits in, weighted by postcodes rather than by people, because the postcode file carries no population. A district where the deprived neighbourhoods are densely populated will read better here than it would per resident.

Neighbouring districts in the UB area

UB1 · UB2 · UB3 · UB5 · UB6 · UB7 · UB8 · UB9 · UB10 · UB11 · UB18

Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.