WD99 postcode district
WD99 holds 21 live postcodes around Watford, in Watford.
No listed town or village has its centre in WD99; the nearest are on the neighbouring districts below.
Wards
| Name | Share of postcodes |
|---|---|
| Holywell | 100% |
Westminster constituency
Every WD99 postcode falls in Watford.
Deprivation
The middle postcode here sits in decile 2 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 100% of this district's postcodes sit in the most deprived three deciles, 0% 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 WD area
WD3 · WD4 · WD5 · WD6 · WD7 · WD17 · WD18 · WD19 · WD23 · WD24 · WD25
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.