WD18 postcode district
WD18 holds 714 live postcodes around West Watford, in Watford, Three Rivers.
Towns and villages with their centre in WD18
| # | Place | County / council | Population |
|---|---|---|---|
| 1 | West Watford | Hertfordshire | 12,800 |
| 2 | Holywell | Hertfordshire | 9,900 |
Wards
| Name | Share of postcodes |
|---|---|
| Holywell | 45% |
| Vicarage | 17% |
| Park | 15% |
| Central | 14% |
| Moor Park & Eastbury | 5% |
| Dickinsons | 3% |
| Oxhey | 1% |
| Oxhey Hall & Hayling | 0% |
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| Watford | 92% |
| South West Hertfordshire | 8% |
Deprivation
The middle postcode here sits in decile 5 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 32% of this district's postcodes sit in the most deprived three deciles, 22% 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 · WD19 · WD23 · WD24 · WD25 · WD99
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.