Road & rail noise map for Farnham
Town in Surrey, South East
We analysed 1,392 postcodes in and around Farnham, Surrey against DEFRA's Strategic Noise Mapping (Round 4, 2022). 29% of them (407) have mapped road noise of 55 dB or more by day, and <1% have mapped rail noise. 70% 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 GU9 8UZ (road noise 70.0–74.9 dB by day).
Noise map of Farnham
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% (203) | 7% (96) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 8% (108) | 7% (91) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 3% (44) | 6% (83) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | 4% (52) | 0% (0) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 71% | 81% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | <1% (5) | <1% (5) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | <1% (3) | <1% (5) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 0% (0) | <1% (2) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | 0% (0) | <1% (1) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 99% | 99% |
Share of the 1,392 postcodes within ~5 km of the Farnham centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Farnham
Check a specific postcode
Example searches: GU9 1GH · GU9 1HB · GU10 5ZQ · GU9 1BP · GU9 1GZ · GU9 1HD
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 Farnham?
- We analysed 1,392 postcodes in and around Farnham, Surrey against DEFRA's Strategic Noise Mapping (Round 4, 2022). 29% of them (407) have mapped road noise of 55 dB or more by day, and <1% have mapped rail noise. 70% 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 GU9 8UZ (road noise 70.0–74.9 dB by day).
- Where is the most road noise in Farnham?
- The postcodes with the highest modelled daytime levels in and around Farnham are GU9 8UZ, GU9 7PF, GU9 7NF, based on DEFRA's 2022 model of major roads and railways.