Longfield, New Ash Green and Hartley
TownTown in Sevenoaks and Dartford, South East.
Longfield, New Ash Green and Hartley is an ONS built-up area: the land built up as one town, whatever council it is in. Figures for Longfield, New Ash Green and Hartley add up the census output areas (or, for claimants, the neighbourhoods) that sit mostly inside it, so they are close to, but not exactly, the town’s own.
Radon Affected Area by town
Worked out by Open Index · 2022
About 96% of people in Longfield, New Ash Green and Hartley live in a 1 km square that the radon atlas marks as a radon Affected Area.
How Longfield, New Ash Green and Hartley compares
Each dot is a town. The black line marks the middle one.
Is Longfield, New Ash Green and Hartley safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Longfield, New Ash Green and Hartley at a rate of 60.4 per 1,000 people.
That compares with 81.3 per 1,000 people across South East.
Across England as a whole, the recorded crime rate was 96.3 per 1,000 people.
In August 2026 alone, 70 cases of crime and anti-social behaviour were recorded in Longfield, New Ash Green and Hartley.
In the 12 months to August 2026, the most common types were violence and sexual offences (241), anti-social behaviour (224) and shoplifting (193).
A year earlier, the recorded crime rate in Longfield, New Ash Green and Hartley was 58.6 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 Longfield, New Ash Green and Hartley, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so Longfield, New Ash Green and Hartley 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
English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.
Neighbourhoods in Longfield, New Ash Green and Hartley
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Dartford 013B | 2,034 | 177.6 per 1,000 | 7 | 92.0% |
| Dartford 013C | 1,578 | 36.7 per 1,000 | 8 | 47.1% |
| Dartford 013D | 1,416 | 47.9 per 1,000 | 9 | 61.9% |
| Sevenoaks 004A | 1,559 | 25.3 per 1,000 | 9 | 54.6% |
| Sevenoaks 004B | 1,549 | 35.5 per 1,000 | 8 | 40.4% |
| Sevenoaks 004C | 1,522 | 25.7 per 1,000 | 10 | 35.6% |
| Sevenoaks 004D | 1,301 | 63.2 per 1,000 | 3 | 49.8% |
| Sevenoaks 016A | 1,608 | 90.0 per 1,000 | 4 | 85.2% |
| Sevenoaks 016B | 1,601 | 41.2 per 1,000 | 6 | 90.5% |
| Sevenoaks 016C | 1,306 | 25.3 per 1,000 | 9 | 99.1% |
| Sevenoaks 016D | 1,554 | 42.1 per 1,000 | 5 | 77.9% |
Your MP
- Tom TugendhatConservativeMP for Tonbridge
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Councils Longfield, New Ash Green and Hartley sits in2
Postcode districts covering Longfield, New Ash Green and Hartley1
Middle areas in Longfield, New Ash Green and Hartley3
Towns near Longfield, New Ash Green and Hartley6
Longfield, New Ash Green and Hartley in brief
Longfield, New Ash Green and Hartley is a town in Sevenoaks and Dartford, South East.
About 16,198 people lived in Longfield, New Ash Green and Hartley in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £465,000 in 2025 across 271 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 60.4 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in Longfield, New Ash Green and Hartley was £465,000 in 2025.
Longfield, New Ash Green and Hartley had 16,077 usual residents at the census.
About 96% of people in Longfield, New Ash Green and Hartley live in a 1 km square that the radon atlas marks as a radon Affected Area.
In Longfield, New Ash Green and Hartley, 69.5% of homes and businesses could get gigabit-capable broadband in January 2026.