# DL4

Postcode district covering Shildon and Sunnydale, in County Durham.

DL4 is a postcode district covering Shildon and Sunnydale, in County Durham. Median sale price £79,000 in 2025. Recorded crime 170.1 per 1,000 people.

Postcode district. Code DL4. In: [Postcodes](https://openindex.co.uk/postcode) › [DL](https://openindex.co.uk/postcode/dl)

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 DL4 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £79,000** (2025). The median price paid for a home in DL4 was £79,000 in 2025. 3rd cheapest 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/dl4#f-house-sales-median-price
- **Population: 10,053** (2021). DL4 had 10,053 usual residents at the census (ONS Census 2021). 719th least 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/dl4#f-population
- **People in radon Affected Area squares: 95%** (2022). About 95% of people in DL4 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/dl4#f-radon-affected-share
- **Gigabit broadband coverage: 92.7%** (January 2026). In DL4, 92.7% 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/dl4#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=DL4) (Worked out by Open Index · 2022): About 95% of people in DL4 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=DL4) (Worked out by Open Index · 2025): 124 homes were sold in DL4 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=DL4) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for DL4.
- [Population by postcode district](https://openindex.co.uk/map/population?place=DL4) (Census 2021, England and Wales): DL4 had 10,053 usual residents at the census.

## How DL4 compares

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

| Measure | DL4 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £79,000 | cheapest | 17 postcode districts, DL · 2025 |
| Population | 10,053 | 2nd least populated | 17 postcode districts, DL · 2021 |
| People in radon Affected Area squares | 95% | 5th most people in radon Affected Areas | 17 postcode districts, DL · 2022 |
| Gigabit broadband coverage | 92.7% | 4th highest | 17 postcode districts, DL · Jan 2026 |

## Is DL4 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in DL4 at a rate of 170.1 per 1,000 people.
That compares with 111.8 per 1,000 people across the DL postcode area.
In August 2026 alone, 127 cases of crime and anti-social behaviour were recorded in DL4.
In the 12 months to August 2026, the most common types were violence and sexual offences (596), anti-social behaviour (340) and other crime (267).
A year earlier, the recorded crime rate in DL4 was 170.3 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 DL4, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so DL4 has no single figure. Of its 6 neighbourhoods with a rank:
- Decile 1 (England’s most deprived 10%): 4 neighbourhoods
- Decile 2: 1 neighbourhood
- Decile 3: 1 neighbourhood

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

## Neighbourhoods in DL4

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [County Durham 059A](https://openindex.co.uk/county-durham/neighbourhood/e01020801) | 1,441 | 130.3 per 1,000 | 2 | 96.0% |
| [County Durham 059B](https://openindex.co.uk/county-durham/neighbourhood/e01020802) | 1,816 | 231.1 per 1,000 | 1 | 88.2% |
| [County Durham 059C](https://openindex.co.uk/county-durham/neighbourhood/e01020838) | 1,720 | 210.5 per 1,000 | 1 | 97.6% |
| [County Durham 059D](https://openindex.co.uk/county-durham/neighbourhood/e01020839) | 1,514 | 192.5 per 1,000 | 1 | 96.3% |
| [County Durham 059E](https://openindex.co.uk/county-durham/neighbourhood/e01020840) | 2,162 | 89.7 per 1,000 | 3 | 82.2% |
| [County Durham 059F](https://openindex.co.uk/county-durham/neighbourhood/e01020841) | 1,769 | 188.2 per 1,000 | 1 | 99.3% |

## Your MP

- [Bishop Auckland](https://openindex.co.uk/constituency/bishop-auckland): Dr Sam Rushworth (Labour), MP since July 2024. 99% of the people here.
- [Darlington](https://openindex.co.uk/constituency/darlington): Lola McEvoy (Labour), MP since July 2024. 0.7% of the people here.
- [Newton Aycliffe and Spennymoor](https://openindex.co.uk/constituency/newton-aycliffe-and-spennymoor): Alan Strickland (Labour), MP since July 2024. 0.3% 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 DL4

[Shildon](https://openindex.co.uk/county-durham/shildon)

## Postcode sectors in DL4

[DL4 1 (150 postcodes)](https://openindex.co.uk/postcode/dl4-1), [DL4 2 (152 postcodes)](https://openindex.co.uk/postcode/dl4-2)

## Council

[County Durham](https://openindex.co.uk/county-durham)

## Towns in DL4

[Shildon](https://openindex.co.uk/town/shildon)

## Postcode districts next to DL4

[DL5](https://openindex.co.uk/postcode/dl5), [DL14](https://openindex.co.uk/postcode/dl14)

## Nearest rail stations

[Shildon (1.6 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-1.6366,54.6262), [Bishop Auckland (3.3 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-1.6777,54.6572), [Newton Aycliffe (4.9 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-1.5897,54.6137)

## More in the DL postcode area

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

## DL4 in brief

DL4 is a postcode district covering Shildon and Sunnydale, in County Durham.
About 10,356 people lived in DL4 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £79,000 in 2025 across 124 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 170.1 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in DL4 was £79,000 in 2025.
DL4 had 10,053 usual residents at the census.
About 95% of people in DL4 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In DL4, 92.7% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: DL4
- Postcode area: [DL](https://openindex.co.uk/postcode/dl)
- Constituency: [Bishop Auckland †](https://openindex.co.uk/constituency/bishop-auckland)
- Council: [County Durham †](https://openindex.co.uk/county-durham)
- Area: 10.63 km²
- People, mid-2024: 10,356*
- Neighbourhoods: 6
- Output areas: 39

* 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

[DL14](https://openindex.co.uk/postcode/dl14), [DL5](https://openindex.co.uk/postcode/dl5)

## Latest updates for DL4

- 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/DL4

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/dl4, or to one figure with its anchor, https://openindex.co.uk/postcode/dl4#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/dl4