Road & rail noise map for Eton
Town in Windsor and Maidenhead, South East
We analysed 359 postcodes in and around Eton, Windsor and Maidenhead against DEFRA's Strategic Noise Mapping (Round 4, 2022). 40% of them (143) have mapped road noise of 55 dB or more by day, and 2% have mapped rail noise. 60% 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 SL3 9EN (road noise 65.0–69.9 dB by day).
Noise map of Eton
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 | 25% (90) | 17% (60) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 14% (51) | 10% (37) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | <1% (2) | <1% (1) |
| 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 | 60% | 73% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 1% (4) | <1% (3) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | <1% (2) | <1% (2) |
| 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 | 98% | 99% |
Share of the 359 postcodes within ~5 km of the Eton centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Eton
Check a specific postcode
Example searches: SL3 9FA · SL3 9EN · SL1 9EA · SL1 5FW · SL1 5LE · SL1 2SZ
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 Eton?
- We analysed 359 postcodes in and around Eton, Windsor and Maidenhead against DEFRA's Strategic Noise Mapping (Round 4, 2022). 40% of them (143) have mapped road noise of 55 dB or more by day, and 2% have mapped rail noise. 60% 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 SL3 9EN (road noise 65.0–69.9 dB by day).
- Where is the most road noise in Eton?
- The postcodes with the highest modelled daytime levels in and around Eton are SL3 9EN, SL3 9FA, SL4 6DG, based on DEFRA's 2022 model of major roads and railways.