Road & rail noise map for Dorking
Town in Surrey, South East
We analysed 1,040 postcodes in and around Dorking, Surrey against DEFRA's Strategic Noise Mapping (Round 4, 2022). 27% of them (277) have mapped road noise of 55 dB or more by day, and <1% have mapped rail noise. 73% 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 RH5 4LY (road noise 65.0–69.9 dB by day).
Noise map of Dorking
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 | 16% (169) | 11% (116) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 8% (79) | 7% (70) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 3% (29) | 1% (15) |
| 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 | 73% | 81% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | <1% (2) | <1% (2) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | <1% (1) | 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 1,040 postcodes within ~5 km of the Dorking centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Dorking
Check a specific postcode
Example searches: RH4 1AR · RH4 1AT · RH3 7HB · RH4 1AD · RH3 7HD · RH4 1BL
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 Dorking?
- We analysed 1,040 postcodes in and around Dorking, Surrey against DEFRA's Strategic Noise Mapping (Round 4, 2022). 27% of them (277) have mapped road noise of 55 dB or more by day, and <1% have mapped rail noise. 73% 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 RH5 4LY (road noise 65.0–69.9 dB by day).
- Where is the most road noise in Dorking?
- The postcodes with the highest modelled daytime levels in and around Dorking are RH5 4LY, RH4 2FY, RH4 1JX, based on DEFRA's 2022 model of major roads and railways.