# WD18

Postcode district covering Watford and Holywell, in Watford.

WD18 is a postcode district covering Watford and Holywell, in Watford. Median sale price £385,000 in 2025. Recorded crime 118.6 per 1,000 people.

Postcode district. Code WD18. In: [Postcodes](https://openindex.co.uk/postcode) › [WD](https://openindex.co.uk/postcode/wd)

Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an WD18 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £385,000** (2025). The median price paid for a home in WD18 was £385,000 in 2025. Joint 643rd most expensive of 2,235. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026. https://openindex.co.uk/postcode/wd18#f-house-sales-median-price
- **Population: 28,180** (2021). WD18 had 28,180 usual residents at the census (ONS Census 2021). 1,019th most populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/postcode/wd18#f-population
- **People in radon Affected Area squares: 78%** (2022). About 78% of people in WD18 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/postcode/wd18#f-radon-affected-share
- **Gigabit broadband coverage: 94.0%** (January 2026). In WD18, 94.0% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. https://openindex.co.uk/postcode/wd18#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=WD18) (Worked out by Open Index · 2022): About 78% of people in WD18 live in a 1 km square that the radon atlas marks as a radon Affected Area.
- [Sales per year by postcode district](https://openindex.co.uk/map/house-sales-per-year?place=WD18) (Worked out by Open Index · 2025): 263 homes were sold in WD18 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=WD18) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for WD18.
- [Population by postcode district](https://openindex.co.uk/map/population?place=WD18) (Census 2021, England and Wales): WD18 had 28,180 usual residents at the census.

## How WD18 compares

Each postcode district against every other postcode district the measure covers.

| Measure | WD18 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £385,000 | cheapest | 11 postcode districts, WD · 2025 |
| Population | 28,180 | 6th most populated | 11 postcode districts, WD · 2021 |
| People in radon Affected Area squares | 78% | 5th fewest people in radon Affected Areas | 11 postcode districts, WD · 2022 |
| Gigabit broadband coverage | 94.0% | 4th highest | 11 postcode districts, WD · Jan 2026 |

## Is WD18 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in WD18 at a rate of 118.6 per 1,000 people.
That compares with 89.7 per 1,000 people across the WD postcode area.
In August 2026 alone, 345 cases of crime and anti-social behaviour were recorded in WD18.
In the 12 months to August 2026, the most common types were violence and sexual offences (1,367), anti-social behaviour (732) and other crime (621).
A year earlier, the recorded crime rate in WD18 was 105.1 per 1,000 people.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.

## Deprivation in WD18, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so WD18 has no single figure. Of its 16 neighbourhoods with a rank:
- Decile 2: 1 neighbourhood
- Decile 3: 3 neighbourhoods
- Decile 4: 1 neighbourhood
- Decile 5: 6 neighbourhoods
- Decile 6: 2 neighbourhoods
- Decile 7: 1 neighbourhood
- Decile 8: 1 neighbourhood
- Decile 9: 1 neighbourhood

Source: English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.

## Neighbourhoods in WD18

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Watford 008A](https://openindex.co.uk/watford/neighbourhood/e01023886) | 2,909 | 61.5 per 1,000 | 8 | 94.6% |
| [Watford 008C](https://openindex.co.uk/watford/neighbourhood/e01023888) | 1,679 | 169.5 per 1,000 | 9 | 99.0% |
| [Watford 009D](https://openindex.co.uk/watford/neighbourhood/e01023862) | 2,664 | 379.2 per 1,000 | 5 | 82.0% |
| [Watford 009G](https://openindex.co.uk/watford/neighbourhood/e01035576) | 1,066 | 442.0 per 1,000 | 3 | 74.6% |
| [Watford 009I](https://openindex.co.uk/watford/neighbourhood/e01035578) | 1,311 | 548.2 per 1,000 | 3 | 73.3% |
| [Watford 010A](https://openindex.co.uk/watford/neighbourhood/e01023899) | 1,757 | 137.0 per 1,000 | 3 | 97.5% |
| [Watford 010B](https://openindex.co.uk/watford/neighbourhood/e01023900) | 1,897 | 51.1 per 1,000 | 6 | 100.0% |
| [Watford 010C](https://openindex.co.uk/watford/neighbourhood/e01023901) | 2,094 | 218.2 per 1,000 | 5 | 100.0% |
| [Watford 010D](https://openindex.co.uk/watford/neighbourhood/e01023902) | 1,742 | 80.8 per 1,000 | 7 | 99.3% |
| [Watford 010E](https://openindex.co.uk/watford/neighbourhood/e01023903) | 1,670 | 59.9 per 1,000 | 5 | 100.0% |
| [Watford 011A](https://openindex.co.uk/watford/neighbourhood/e01023863) | 1,827 | 96.7 per 1,000 | 6 | 93.4% |
| [Watford 011B](https://openindex.co.uk/watford/neighbourhood/e01023864) | 1,735 | 77.9 per 1,000 | 5 | 100.0% |
| [Watford 011C](https://openindex.co.uk/watford/neighbourhood/e01023865) | 1,995 | 94.0 per 1,000 | 4 | 96.5% |
| [Watford 011D](https://openindex.co.uk/watford/neighbourhood/e01023866) | 1,668 | 156.2 per 1,000 | 2 | 94.5% |
| [Watford 011F](https://openindex.co.uk/watford/neighbourhood/e01035579) | 1,833 | 85.5 per 1,000 | 5 | 84.2% |
| [Watford 011G](https://openindex.co.uk/watford/neighbourhood/e01035580) | 1,238 | 87.0 per 1,000 | 5 | 87.5% |

## Your MP

- [Watford](https://openindex.co.uk/constituency/watford): Matt Turmaine (Labour), MP since July 2024. 92% of the people here.
- [South West Hertfordshire](https://openindex.co.uk/constituency/south-west-hertfordshire): Mr Gagan Mohindra (Conservative), MP since July 2024. 8.3% of the people here.

As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Middle areas in WD18

[Holywell](https://openindex.co.uk/watford/holywell), [West Watford](https://openindex.co.uk/watford/west-watford)

## Postcode sectors in WD18

[WD18 0 (203 postcodes)](https://openindex.co.uk/postcode/wd18-0), [WD18 1 (92 postcodes)](https://openindex.co.uk/postcode/wd18-1), [WD18 6 (103 postcodes)](https://openindex.co.uk/postcode/wd18-6), [WD18 7 (211 postcodes)](https://openindex.co.uk/postcode/wd18-7), [WD18 8 (63 postcodes)](https://openindex.co.uk/postcode/wd18-8), [WD18 9 (42 postcodes)](https://openindex.co.uk/postcode/wd18-9)

## Council

[Watford](https://openindex.co.uk/watford)

## Towns in WD18

[Watford](https://openindex.co.uk/town/watford)

## Postcode districts next to WD18

[HA6](https://openindex.co.uk/postcode/ha6), [WD3](https://openindex.co.uk/postcode/wd3), [WD17](https://openindex.co.uk/postcode/wd17), [WD19](https://openindex.co.uk/postcode/wd19)

## Nearest rail stations

[Watford (850 m from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.4174,51.6574), [Watford High Street (1.5 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.3917,51.6527), [Watford Junction (1.9 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.3959,51.6639), [Bushey (2.0 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.3847,51.6456)

## More in the WD postcode area

[All WD postcode districts](https://openindex.co.uk/postcode/wd), [Every UK postcode area](https://openindex.co.uk/postcode)

## WD18 in brief

WD18 is a postcode district covering Watford and Holywell, in Watford.
About 30,753 people lived in WD18 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £385,000 in 2025 across 263 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 118.6 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in WD18 was £385,000 in 2025.
WD18 had 28,180 usual residents at the census.
About 78% of people in WD18 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In WD18, 94.0% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: WD18
- Postcode area: [WD](https://openindex.co.uk/postcode/wd)
- Constituency: [Watford †](https://openindex.co.uk/constituency/watford)
- Council: [Watford †](https://openindex.co.uk/watford)
- Area: 6.13 km²
- People, mid-2024: 30,753*
- Neighbourhoods: 16
- Output areas: 75

* People: worked out by Open Index from neighbourhood estimates, shared out by where people lived at the census (by area in Northern Ireland). This area's edges do not follow neighbourhood edges, so the figure is close but not exact.
† Best fit: the constituency, council, region and nation this postcode district mostly lies in. Its edges do not follow theirs.

## Next door

[WD17](https://openindex.co.uk/postcode/wd17), [WD3](https://openindex.co.uk/postcode/wd3), [HA6](https://openindex.co.uk/postcode/ha6), [WD19](https://openindex.co.uk/postcode/wd19)

## Latest updates for WD18

- August 2026 house prices published: HM Land Registry and partners · Oct 2026.
- September 2026 rent published: ONS private rents · Oct 2026.
- Dental practices updated: NHS England · Oct 2026.
- Schools updated: Ofsted · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/WD18

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/wd18, or to one figure with its anchor, https://openindex.co.uk/postcode/wd18#f-house-sales-median-price.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/postcode/wd18