Road & rail noise map for Ewell
Town in Surrey, South East
We analysed 3,310 postcodes in and around Ewell, Surrey against DEFRA's Strategic Noise Mapping (Round 4, 2022). 31% of them (1,021) have mapped road noise of 55 dB or more by day, and 3% have mapped rail noise. 67% 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 KT5 9EW (road noise 75.0 dB or more by day).
Noise map of Ewell
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 | 15% (485) | 7% (230) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 9% (286) | 7% (248) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 6% (187) | 3% (110) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | 2% (60) | 1% (36) |
| 75.0 dB or more day · 70.0 dB or more night | <1% (3) | <1% (1) |
| Below mapped bands / not mapped | 69% | 81% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 1% (41) | <1% (28) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 1% (39) | 1% (39) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | <1% (5) | <1% (2) |
| 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 | 97% | 98% |
Share of the 3,310 postcodes within ~5 km of the Ewell centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Ewell
Check a specific postcode
Example searches: SM1 1HN · KT5 9EW · KT5 9ER · KT3 5QR · KT3 5QQ · KT3 5BF
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 Ewell?
- We analysed 3,310 postcodes in and around Ewell, Surrey against DEFRA's Strategic Noise Mapping (Round 4, 2022). 31% of them (1,021) have mapped road noise of 55 dB or more by day, and 3% have mapped rail noise. 67% 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 KT5 9EW (road noise 75.0 dB or more by day).
- Where is the most road noise in Ewell?
- The postcodes with the highest modelled daytime levels in and around Ewell are KT5 9EW, KT5 9ER, SM1 1HN, based on DEFRA's 2022 model of major roads and railways.