Cornwall
112 postcode sectors mapped mainly to Cornwall. Choose a district or browse the guides below. These are postcode sectors, not named neighbourhood boundaries.
Postcode districts
Area guides
112 sectors
- TR27 4Near Hayle
- TR27 5Near Hayle
- TR27 6Near St Erth
- TR27 9Near Hayle
- TR3 6Near Kea
- TR3 7Near Ponsanooth
- TR4 8Near Chacewater
- TR4 9Near Perranzabuloe
- TR5 0Near St. Agnes
- TR6 0Near Perranzabuloe
- TR7 2Near Newquay
- TR7 3Near Newquay
- TR7 9Near Newquay
- TR8 4Near Cornwall
- TR8 5Near St. Newlyn East
- TR9 6Near St. Columb Major
Authority grouping uses mapped sector boundaries from the Office for National Statistics, December 2025. It measures boundary area, not the number of addresses or residents. Guide names describe a place near the approximate sector centre.