Road & rail noise map for Sedgefield
Town in County Durham, North East
We analysed 342 postcodes in and around Sedgefield, County Durham against DEFRA's Strategic Noise Mapping (Round 4, 2022). 35% of them (120) have mapped road noise of 55 dB or more by day, and <1% have mapped rail noise. 65% 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 TS21 3HH (road noise 70.0–74.9 dB by day).
Noise map of Sedgefield
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 | 26% (89) | 4% (14) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 8% (28) | 4% (13) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | <1% (2) | <1% (3) |
| 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 | 65% | 91% |
Rail noise
| Band | Day (LAeq,16h) | Night (Lnight) |
|---|---|---|
| 55.0–59.9 dB day · 50.0–54.9 dB night | 0% (0) | 0% (0) |
| 60.0–64.9 dB day · 55.0–59.9 dB night | 0% (0) | <1% (1) |
| 65.0–69.9 dB day · 60.0–64.9 dB night | <1% (1) | 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 342 postcodes within ~5 km of the Sedgefield centre. Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence.
Noisiest postcodes in and around Sedgefield
Check a specific postcode
Example searches: TS21 3HH · TS22 5NW · TS21 2ES · TS21 2AF · DL17 9DY · DL17 9BJ
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 Sedgefield?
- We analysed 342 postcodes in and around Sedgefield, County Durham against DEFRA's Strategic Noise Mapping (Round 4, 2022). 35% of them (120) have mapped road noise of 55 dB or more by day, and <1% have mapped rail noise. 65% 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 TS21 3HH (road noise 70.0–74.9 dB by day).
- Where is the most road noise in Sedgefield?
- The postcodes with the highest modelled daytime levels in and around Sedgefield are TS21 3HH, TS22 5NW, TS21 2ES, based on DEFRA's 2022 model of major roads and railways.