Road & rail noise map for Redhill
Town in Surrey, South East
We analysed 1,177 postcodes in and around Redhill, Surrey against DEFRA's Strategic Noise Mapping (Round 4, 2022). 25% of them (289) have mapped road noise of 55 dB or more by day, and 15% have mapped rail noise. 62% 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 RH1 3EB.
Noise map of Redhill
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 | 13% (148) | 6% (72) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 8% (95) | 8% (91) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 4% (46) | 2% (18) |
| 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 | 75% | 85% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 11% (126) | 7% (79) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 3% (37) | 8% (93) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 1% (16) | 1% (14) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | <1% (1) | <1% (1) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 85% | 84% |
Share of the 1,177 postcodes within ~5 km of the Redhill centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Redhill
Check a specific postcode
Example searches: RH1 1DL · RH1 1FG · RH1 1BL · RH1 1BA · RH1 1EX · RH1 1HF
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 Redhill?
- We analysed 1,177 postcodes in and around Redhill, Surrey against DEFRA's Strategic Noise Mapping (Round 4, 2022). 25% of them (289) have mapped road noise of 55 dB or more by day, and 15% have mapped rail noise. 62% 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 RH1 3EB.
- Where is the most road noise in Redhill?
- The postcodes with the highest modelled daytime levels in and around Redhill are RH1 3EB, RH1 6PU, RH1 4AJ, based on DEFRA's 2022 model of major roads and railways.