SW1A postcode district
SW1A holds 145 live postcodes around St James's, in Westminster, Wandsworth.
Towns and villages with their centre in SW1A
| # | Place | County / council | Population |
|---|---|---|---|
| 1 | St James's | Greater London | 10,361 |
Wards
| Name | Share of postcodes |
|---|---|
| St James's | 99% |
| Nine Elms | 1% |
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| Cities of London and Westminster | 99% |
| Battersea | 1% |
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, 80% 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 SW area
SW1E · SW1H · SW1P · SW1V · SW1W · SW1X · SW1Y · SW2 · SW3 · SW4 · SW5 · SW6 · SW7 · SW8 · SW9 · SW10 · SW11 · SW12 · SW13 · SW14 · SW15 · SW16 · SW17 · SW18 · SW19 · SW20 · SW95
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.