Road & rail noise map for Seaham
Town in County Durham, North East
We analysed 851 postcodes in and around Seaham, County Durham against DEFRA's Strategic Noise Mapping (Round 4, 2022). 32% of them (275) have mapped road noise of 55 dB or more by day, and <1% have mapped rail noise. 68% 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 SR7 8SS (road noise 70.0–74.9 dB by day).
Noise map of Seaham
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 | 24% (207) | 6% (54) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 7% (61) | 4% (33) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | <1% (6) | <1% (2) |
| 70.0–74.9 dB day · 65.0–69.9 dB night | <1% (1) | 0% (0) |
| 75.0 dB or more day · 70.0 dB or more night | 0% (0) | 0% (0) |
| Below mapped bands / not mapped | 68% | 90% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 0% (0) | <1% (1) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | <1% (1) | 0% (0) |
| 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 | 100% | 100% |
Share of the 851 postcodes within ~5 km of the Seaham centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Seaham
Check a specific postcode
Example searches: SR7 8SS · SR7 8EP · SR7 0JL · SR7 0LN · SR7 8DD · SR7 0LW
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 Seaham?
- We analysed 851 postcodes in and around Seaham, County Durham against DEFRA's Strategic Noise Mapping (Round 4, 2022). 32% of them (275) have mapped road noise of 55 dB or more by day, and <1% have mapped rail noise. 68% 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 SR7 8SS (road noise 70.0–74.9 dB by day).
- Where is the most road noise in Seaham?
- The postcodes with the highest modelled daytime levels in and around Seaham are SR7 8SS, SR7 8DD, SR7 8RW, based on DEFRA's 2022 model of major roads and railways.