Road & rail noise map for Heathfield
Town in East Sussex, South East
We analysed 660 postcodes in and around Heathfield, East Sussex against DEFRA's Strategic Noise Mapping (Round 4, 2022). 37% of them (245) have mapped road noise of 55 dB or more by day, and 0% have mapped rail noise. 63% of postcodes have no mapped road or rail noise at all — though that reflects major-source modelling, not guaranteed quiet. The highest modelled level we found is at TN20 6JN (road noise 65.0–69.9 dB by day).
Noise map of Heathfield
How many postcodes are affected?
Road noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 22% (147) | 12% (82) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 11% (75) | 9% (62) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 3% (23) | 2% (14) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | 0% (0) | 0% (0) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 63% | 76% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 0% (0) | 0% (0) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 0% (0) | 0% (0) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 0% (0) | 0% (0) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | 0% (0) | 0% (0) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 100% | 100% |
Share of the 660 postcodes within ~5 km of the Heathfield centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Heathfield
Check a specific postcode
Example searches: TN20 6HY · TN20 6JG · TN20 6ED · TN20 6HL · TN20 6JD · TN20 6JH
What this data does — and doesn't — cover
- Modelled, not measured.These are DEFRA's computer-modelled estimates (Round 4, 2022), not microphone readings at your door.
- Major sources only. The model covers major roads, major railways and large urban areas. Smaller local roads, neighbours, pubs, building sites and aircraft are not included.
- No mapped noise ≠ quiet. If a location shows no band, it means it falls outside the mapped contours — not that it is silent.
- 2022 snapshot.New roads, developments or traffic changes since 2022 won't show. The next DEFRA round is due around 2027.
More detail on the methodology page.
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Nearby areas
Frequently asked questions
- How noisy is Heathfield?
- We analysed 660 postcodes in and around Heathfield, East Sussex against DEFRA's Strategic Noise Mapping (Round 4, 2022). 37% of them (245) have mapped road noise of 55 dB or more by day, and 0% have mapped rail noise. 63% of postcodes have no mapped road or rail noise at all — though that reflects major-source modelling, not guaranteed quiet. The highest modelled level we found is at TN20 6JN (road noise 65.0–69.9 dB by day).
- Where is the most road noise in Heathfield?
- The postcodes with the highest modelled daytime levels in and around Heathfield are TN20 6JN, TN20 6HY, TN21 8JB, based on DEFRA's 2022 model of major roads and railways.