TR3 postcode district

Postcodes and sectors

489 of the district's 579 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 50.21752, -5.11234, which locates the district, not a building.

Companies registered in TR3

Companies House lists 563 companies with a registered office in TR3; none of them at an address shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for TR3

• Cornwall
• South West
• Threemilestone
• Carnon Downs
• Perranwell
• Ponsanooth
• Stithians
• Devoran
• Playing Place
• Trolver Croft
• Penpol
• Perranarworthal
• Feock
• Hendra
• Penelewey
• Truro
• Newbridge
• Calenick
• Ringwell
• Trelissick
• Harcourt
• Tresevern Croft
• Greensplat
• Kea

Roads filed under TR3

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.

• Agar Meadows
• Arworthal Meadows
• Ash Tree Close
• Belmont Terrace
• Berveth Close
• Bissoe Road
• Carclew Terrace
• Carlyon Close
• Carlyon Road
• Carnon Crescent
• Carnon Terrace
• Centenary Way
• Chapel Hill
• Chapel Terrace
• Church Mews
• Church Road
• Church Terrace
• Chycoose Parc
• Chyreen Lane
• Chyvelah Close
• Chyvelah Road
• Chyvogue Meadow
• Collins Parc
• Commercial Hill
• Cot Hill
• Cot Wood
• Cove Hill
• Cowling Road
• Crellow Fields
• Crellow Hill
• Crellow Lane
• Crellow Vale
• Deeble Close
• Devoran Lane
• Dicky Lane
• Dingles Close
• Dozmere
• Dozmere Close
• Drovers Way
• East Road
• Edwards Road
• Elizabeth Close
• Elm Grove
• Elm Meadow
• Fir Grove
• Fordh Bucca
• Forth an Cos
• Forth Coth
• Forth Noweth
• Foundry Road
• Gig Lane
• Glenthorne Road
• Glyn Way
• Goonvrea
• Gordons Close
• Greenbank Road
• Green Close
• Greenwith Hill
• Greenwith Road
• Grenna Lane

Check an address in TR3

Check an address in TR3

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=TR3" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about TR3

What does a TR3 postcode tell you?

That the address lies in the TR3 district of the TR (Truro) postcode area, and the place OS Open Names most often lists first for its postcodes is Cornwall. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 489 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 TR3

• TR105.6 km
• TR16.5 km
• TR117.7 km
• TR47.9 km
• TR168.0 km
• TR159.1 km
• TR512.0 km
• TR212.2 km
• TR1413.1 km
• TR614.1 km
• TR1317.3 km
• TR1220.1 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids