Road & rail noise map for Crawley
Town in West Sussex, South East
We analysed 2,794 postcodes in and around Crawley, West Sussex against DEFRA's Strategic Noise Mapping (Round 4, 2022). 20% of them (559) have mapped road noise of 55 dB or more by day, and 2% have mapped rail noise. 78% 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 RH11 9NG (road noise 70.0–74.9 dB by day).
Noise map of Crawley
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 | 13% (375) | 5% (140) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 5% (135) | 4% (106) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | 2% (46) | <1% (20) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | <1% (3) | 0% (0) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 80% | 90% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 1% (37) | 1% (41) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | <1% (23) | <1% (7) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | <1% (3) | <1% (4) |
| 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% | 98% |
Share of the 2,794 postcodes within ~5 km of the Crawley centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Crawley
Check a specific postcode
Example searches: RH11 9NG · RH10 9TA · RH10 1BJ · RH10 1BZ · RH10 1BN · RH10 1BH
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 Crawley?
- We analysed 2,794 postcodes in and around Crawley, West Sussex against DEFRA's Strategic Noise Mapping (Round 4, 2022). 20% of them (559) have mapped road noise of 55 dB or more by day, and 2% have mapped rail noise. 78% 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 RH11 9NG (road noise 70.0–74.9 dB by day).
- Where is the most road noise in Crawley?
- The postcodes with the highest modelled daytime levels in and around Crawley are RH11 9NG, RH10 1BJ, RH10 9TA, based on DEFRA's 2022 model of major roads and railways.