TR21 postcode district
TR21, in the TR (Truro) postcode area, has 73 live and 30 terminated postcodes in the ONS Postcode Directory of August 2026, and OS Open Names files 48 roads under it.
| postcode area | TR (Truro) |
|---|---|
| live postcodes | 73 |
| terminated postcodes | 30 |
| sectors | 1 |
| roads listed | 48 |
| companies registered | 91 |
| centroid | 49.91909, -6.29862 |
| directory release | 2026-08 |
Postcodes and sectors
73 of the district's 103 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 49.91909, -6.29862, which locates the district, not a building.
| sector | live | terminated |
|---|---|---|
| TR21 0 | 73 | 30 |
Companies registered in TR21
Companies House lists 91 companies with a registered office in TR21 (1 October 2026 snapshot).
Places OS Open Names lists for TR21
- South West
- Isles of Scilly
- Hugh Town
- Old Town
- Maypole
- Porthloo
- Penzance
- Cornwall
Roads filed under TR21
Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.
- Back Lane
- Bay View Terrace
- Buzza Road
- Buzza Street
- Carn Friars Lane
- Church Road
- Church Street
- Decca Lane
- Ennor Close
- Garrison Hill
- Garrison Lane
- Green Lane
- High Cross Lane
- High Lane
- Hospital Lane
- Hugh Street
- Ingram's Opening
- Jackson's Hill
- Jerusalem Terrace
- King Edward's Road
- Launceston Close
- Lower Strand
- Mc Farland's Down
- Mill Hill
- Moor Well Lane
- Old Town Lane
- Old Town Road
- Pelistry Lane
- Pilot's Retreat
- Porthcressa Road
- Porth Loo Lane
- Pungies Lane
- Ram's Valley
- Rocky Hill Lane
- Sally Port
- Silver Street
- Silvesters Lane
- Strand
- Telegraph Road
- Thoroughfare
- Town Lane
- Trench Lane
- Watermill Lane
- Well Cross
- Well Lane
- A3110
- A3111
- A3112
Check an address in TR21
The same road list through the API, from the outward code alone:
curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=TR21" \ -H "Authorization: Bearer $SPAW_KEY"
Common questions about TR21
- What does a TR21 postcode tell you?
- That the address lies in the TR21 district of the TR (Truro) postcode area, and the place OS Open Names most often lists first for its postcodes is Hugh Town. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 73 live postcodes.
Where the counts come from
- ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
- os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
- uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0
What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.
Data synced on 2026-11-01: the newest version among the datasets listed above.
Districts nearest TR21
- TR224.0 km
- TR244.8 km
- TR255.0 km
- TR235.5 km
- TR1951.7 km
- TR1858.4 km
- TR2062.6 km
- TR1763.6 km
- TR2666.5 km
- TR2770.3 km
- TR1375.4 km
- TR1478.5 km
- Every district
- How a British address is written
- Check any address
distance between the districts' centroids
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