HA4 postcode district
HA4 holds 1,137 live postcodes around Ruislip, in Hillingdon, Harrow.
Towns and villages with their centre in HA4
| # | Place | County / council | Population |
|---|---|---|---|
| 1 | Ruislip | Greater London | 31,000 |
| 2 | South Ruislip | Greater London | 16,800 |
| 3 | Ruislip Manor | Greater London | 11,000 |
Wards
| Name | Share of postcodes |
|---|---|
| Ruislip | 34% |
| South Ruislip | 28% |
| Eastcote | 19% |
| Ruislip Manor | 18% |
| Ickenham & South Harefield | 0% |
| Roxeth | 0% |
| Roxbourne | 0% |
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| "Ruislip | 54% |
| Uxbridge and South Ruislip | 46% |
| Harrow West | 0% |
Deprivation
The middle postcode here sits in decile 8 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 0% of this district's postcodes sit in the most deprived three deciles, 59% 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 HA area
HA0 · HA1 · HA2 · HA3 · HA5 · HA6 · HA7 · HA8 · HA9
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.