TW1 postcode district
TW1 holds 665 live postcodes around Hounslow, in Richmond upon Thames, Hounslow.
No listed town or village has its centre in TW1; the nearest are on the neighbouring districts below.
Wards
| Name | Share of postcodes |
|---|---|
| Twickenham Riverside | 48% |
| St Margarets & North Twickenham | 27% |
| South Twickenham | 18% |
| Isleworth | 6% |
| Teddington | 1% |
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| Twickenham | 94% |
| Brentford and Isleworth | 6% |
Deprivation
The middle postcode here sits in decile 9 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, 94% 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 TW area
TW2 · TW3 · TW4 · TW5 · TW6 · TW7 · TW8 · TW9 · TW10 · TW11 · TW12 · TW13 · TW14 · TW15 · TW16 · TW17 · TW18 · TW19 · TW20
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.