SE21 postcode district
SE21 holds 296 live postcodes around Peckham, in Southwark, Lambeth.
No listed town or village has its centre in SE21; the nearest are on the neighbouring districts below.
Wards
| Name | Share of postcodes |
|---|---|
| Dulwich Wood | 38% |
| West Dulwich | 34% |
| Dulwich Village | 23% |
| Gipsy Hill | 4% |
| St Martin's | 1% |
Westminster constituency
Every SE21 postcode falls in Dulwich and West Norwood.
Deprivation
The middle postcode here sits in decile 7 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 13% of this district's postcodes sit in the most deprived three deciles, 28% 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 SE area
SE1 · SE1P · SE2 · SE3 · SE4 · SE5 · SE6 · SE7 · SE8 · SE9 · SE10 · SE11 · SE12 · SE13 · SE14 · SE15 · SE16 · SE17 · SE18 · SE19 · SE20 · SE22 · SE23 · SE24 · SE25 · SE26 · SE27 · SE28
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.