# DA3

Postcode district covering Hartley, New Barn and New Ash Green, in Sevenoaks and Dartford.

DA3 is a postcode district covering Hartley, New Barn and New Ash Green, in Sevenoaks and Dartford. Median sale price £469,875 in 2025.

Postcode district. Code DA3. In: [Postcodes](https://openindex.co.uk/postcode) › [DA](https://openindex.co.uk/postcode/da)

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 DA3 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £469,875** (2025). The median price paid for a home in DA3 was £469,875 in 2025. 365th 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/da3#f-house-sales-median-price
- **Population: 16,482** (2021). DA3 had 16,482 usual residents at the census (ONS Census 2021). 1,089th 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/da3#f-population
- **People in radon Affected Area squares: 96%** (2022). About 96% of people in DA3 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/da3#f-radon-affected-share
- **Gigabit broadband coverage: 65.8%** (January 2026). In DA3, 65.8% 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/da3#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas#place=DA3) (Worked out by Open Index · 2022): About 96% of people in DA3 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=DA3) (Worked out by Open Index · 2025): 284 homes were sold in DA3 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime#place=DA3) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for DA3.
- [Population by postcode district](https://openindex.co.uk/map/population#place=DA3) (Census 2021, England and Wales): DA3 had 16,482 usual residents at the census.

## How DA3 compares

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

| Measure | DA3 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £469,875 | 4th most expensive | 18 postcode districts, DA · 2025 |
| Population | 16,482 | 7th least populated | 18 postcode districts, DA · 2021 |
| People in radon Affected Area squares | 96% | 5th most people in radon Affected Areas | 18 postcode districts, DA · 2022 |
| Gigabit broadband coverage | 65.8% | 2nd lowest | 18 postcode districts, DA · Jan 2026 |

## Is DA3 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in DA3 at a rate of 62.3 per 1,000 people.
That compares with 87.9 per 1,000 people across the DA postcode area.
In August 2026 alone, 78 cases of crime and anti-social behaviour were recorded in DA3.
In the 12 months to August 2026, the most common types were violence and sexual offences (259), anti-social behaviour (231) and shoplifting (194).
A year earlier, the recorded crime rate in DA3 was 61.3 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 DA3, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so DA3 has no single figure. Of its 11 neighbourhoods with a rank:
- Decile 3: 1 neighbourhood
- Decile 4: 1 neighbourhood
- Decile 5: 1 neighbourhood
- Decile 6: 1 neighbourhood
- Decile 7: 1 neighbourhood
- Decile 8: 2 neighbourhoods
- Decile 9: 3 neighbourhoods
- Decile 10 (England’s least deprived 10%): 1 neighbourhood

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

## Neighbourhoods in DA3

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Dartford 013B](https://openindex.co.uk/dartford/neighbourhood/e01024158) | 2,034 | 177.6 per 1,000 | 7 | 92.0% |
| [Dartford 013C](https://openindex.co.uk/dartford/neighbourhood/e01024159) | 1,578 | 36.7 per 1,000 | 8 | 47.1% |
| [Dartford 013D](https://openindex.co.uk/dartford/neighbourhood/e01024160) | 1,416 | 47.9 per 1,000 | 9 | 61.9% |
| [Sevenoaks 004A](https://openindex.co.uk/sevenoaks/neighbourhood/e01024441) | 1,559 | 25.3 per 1,000 | 9 | 54.6% |
| [Sevenoaks 004B](https://openindex.co.uk/sevenoaks/neighbourhood/e01024442) | 1,549 | 35.5 per 1,000 | 8 | 40.4% |
| [Sevenoaks 004C](https://openindex.co.uk/sevenoaks/neighbourhood/e01024443) | 1,522 | 25.7 per 1,000 | 10 | 35.6% |
| [Sevenoaks 004D](https://openindex.co.uk/sevenoaks/neighbourhood/e01024444) | 1,301 | 63.2 per 1,000 | 3 | 49.8% |
| [Sevenoaks 016A](https://openindex.co.uk/sevenoaks/neighbourhood/e01024413) | 1,608 | 90.0 per 1,000 | 4 | 85.2% |
| [Sevenoaks 016B](https://openindex.co.uk/sevenoaks/neighbourhood/e01024414) | 1,601 | 41.2 per 1,000 | 6 | 90.5% |
| [Sevenoaks 016C](https://openindex.co.uk/sevenoaks/neighbourhood/e01024415) | 1,306 | 25.3 per 1,000 | 9 | 99.1% |
| [Sevenoaks 016D](https://openindex.co.uk/sevenoaks/neighbourhood/e01032619) | 1,554 | 42.1 per 1,000 | 5 | 77.9% |

## Your MP

- [Tonbridge](https://openindex.co.uk/constituency/tonbridge): Tom Tugendhat (Conservative), MP since July 2024. 57% of the people here.
- [Dartford](https://openindex.co.uk/constituency/dartford): Jim Dickson (Labour), MP since July 2024. 30% of the people here.
- [Sevenoaks](https://openindex.co.uk/constituency/sevenoaks): Laura Trott (Conservative), MP since July 2024. 11% of the people here.
- [Gravesham](https://openindex.co.uk/constituency/gravesham): Dr Lauren Sullivan (Labour), MP since July 2024. 0.8% 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 DA3

[Hartley & Hodsoll Street](https://openindex.co.uk/sevenoaks/hartley-and-hodsoll-street), [Longfield, New Barn & Southfleet](https://openindex.co.uk/dartford/longfield-new-barn-and-southfleet), [New Ash Green](https://openindex.co.uk/sevenoaks/new-ash-green)

## Postcode sectors in DA3

[DA3 7 (179 postcodes)](https://openindex.co.uk/postcode/da3-7), [DA3 8 (170 postcodes)](https://openindex.co.uk/postcode/da3-8), [DA3 9 (6 postcodes)](https://openindex.co.uk/postcode/da3-9)

## Councils DA3 covers

[Sevenoaks](https://openindex.co.uk/sevenoaks), [Dartford](https://openindex.co.uk/dartford)

## Towns in DA3

[Longfield, New Ash Green and Hartley](https://openindex.co.uk/town/longfield-new-ash-green-and-hartley)

## Postcode districts next to DA3

[DA2](https://openindex.co.uk/postcode/da2), [DA4](https://openindex.co.uk/postcode/da4), [DA13](https://openindex.co.uk/postcode/da13), [TN15](https://openindex.co.uk/postcode/tn15)

## Nearest rail stations

[Longfield (1.5 km from the middle)](https://openindex.co.uk/map/rail-stations#around=0.3004,51.3962), [Meopham (3.1 km from the middle)](https://openindex.co.uk/map/rail-stations#around=0.3569,51.3864), [Sole Street (4.6 km from the middle)](https://openindex.co.uk/map/rail-stations#around=0.3781,51.3832), [Farningham Road (5.6 km from the middle)](https://openindex.co.uk/map/rail-stations#around=0.2354,51.4017)

## More in the DA postcode area

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

## DA3 in brief

DA3 is a postcode district covering Hartley, New Barn and New Ash Green, in Sevenoaks and Dartford.
About 16,620 people lived in DA3 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £469,875 in 2025 across 284 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 62.3 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in DA3 was £469,875 in 2025.
DA3 had 16,482 usual residents at the census.
About 96% of people in DA3 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In DA3, 65.8% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: DA3
- Postcode area: [DA](https://openindex.co.uk/postcode/da)
- Constituency: [Tonbridge †](https://openindex.co.uk/constituency/tonbridge)
- Council: [Sevenoaks †](https://openindex.co.uk/sevenoaks)
- Area: 17.18 km²
- People, mid-2024: 16,620*
- Neighbourhoods: 11
- Output areas: 53

* 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

[TN15](https://openindex.co.uk/postcode/tn15), [DA13](https://openindex.co.uk/postcode/da13), [DA4](https://openindex.co.uk/postcode/da4), [DA2](https://openindex.co.uk/postcode/da2)

## Latest updates for DA3

- 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/DA3

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/da3, or to one figure with its anchor, https://openindex.co.uk/postcode/da3#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 2026.10.11. The HTML page: https://openindex.co.uk/postcode/da3