HP21 postcode district
HP21 holds 725 live postcodes around High Wycombe, in Buckinghamshire.
No listed town or village has its centre in HP21; the nearest are on the neighbouring districts below.
Wards
| Name | Share of postcodes |
|---|---|
| Aylesbury South East | 34% |
| Aylesbury South West | 29% |
| Aylesbury East | 17% |
| Aylesbury West | 11% |
| Aylesbury North | 9% |
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| Aylesbury | 98% |
| Mid Buckinghamshire | 2% |
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. 22% of this district's postcodes sit in the most deprived three deciles, 50% 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 HP area
HP1 · HP2 · HP3 · HP4 · HP5 · HP6 · HP7 · HP8 · HP9 · HP10 · HP11 · HP12 · HP13 · HP14 · HP15 · HP16 · HP17 · HP18 · HP19 · HP20 · HP22 · HP23 · HP27
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.