Road & rail noise map for Borehamwood
Town in Hertfordshire, Eastern
We analysed 2,195 postcodes in and around Borehamwood, Hertfordshire against DEFRA's Strategic Noise Mapping (Round 4, 2022). 26% of them (577) have mapped road noise of 55 dB or more by day, and 3% have mapped rail noise. 72% 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 NW7 3JT (road noise 70.0–74.9 dB by day).
Noise map of Borehamwood
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 | 14% (307) | 8% (166) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 9% (189) | 7% (152) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 3% (68) | 2% (46) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | <1% (13) | <1% (3) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 74% | 83% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 1% (32) | 1% (32) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 1% (22) | <1% (18) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | <1% (10) | <1% (7) |
| 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% | 97% |
Share of the 2,195 postcodes within ~5 km of the Borehamwood centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Borehamwood
Check a specific postcode
Example searches: HA8 9NT · HA8 9QW · HA8 7AU · HA8 7LQ · HA8 9NY · NW7 3AP
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 Borehamwood?
- We analysed 2,195 postcodes in and around Borehamwood, Hertfordshire against DEFRA's Strategic Noise Mapping (Round 4, 2022). 26% of them (577) have mapped road noise of 55 dB or more by day, and 3% have mapped rail noise. 72% 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 NW7 3JT (road noise 70.0–74.9 dB by day).
- Where is the most road noise in Borehamwood?
- The postcodes with the highest modelled daytime levels in and around Borehamwood are NW7 3JT, WD6 3HA, NW7 3JU, based on DEFRA's 2022 model of major roads and railways.