TR18 postcode district

Postcodes and sectors

862 of the district's 1,215 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 50.11746, -5.54244, which locates the district, not a building.

Companies registered in TR18

Companies House lists 954 companies with a registered office in TR18; 109 of them at addresses 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 TR18

• Cornwall
• South West
• Penzance
• Newlyn
• Trevarrack
• Longrock

Roads filed under TR18

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.

• Abbey Street
• Adelaide Street
• Adit Lane
• Albert Street
• Albert Terrace
• Alexandra Gardens
• Alexandra Place
• Alexandra Road
• Alma Place
• Alma Terrace
• Alverton Road
• Alverton Street
• Antoine Close
• Art Gallery Terrace
• Barbican Lane
• Barlandhu
• Barlanwick
• Barnfield Gardens
• Barton Close
• Barwis Hill
• Battery Road
• Bay View Terrace
• Belgravia Street
• Belle Vue
• Belle Vue Terrace
• Bloom Fields
• Boase Street
• Bolitho Road
• Bon Cot Road
• Boscathnoe Lane
• Boscathnoe Way
• Boskernick Close
• Bosvenna Way
• Boswergy
• Boundary Close
• Bowjey Hill
• Bowjey Terrace
• Branwell Lane
• Bread Street
• Brian Laity Way
• Brighton Terrace
• Britons Hill
• Buccaneer Street
• Buriton Row
• Caldwells Road
• Cardinnis Road
• Carminowe Crescent
• Carne Road
• Castle Horneck Close
• Castle Horneck Road
• Castle Road
• Causewayhead
• Chancery Lane
• Chapel Road
• Chapel Street
• Charles Street
• Charter Way
• Church Road
• Church Street
• Church View Close

Check an address in TR18

Check an address in TR18

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=TR18" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about TR18

What does a TR18 postcode tell you?

That the address lies in the TR18 district of the TR (Truro) postcode area, and the place OS Open Names most often lists first for its postcodes is Penzance. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 862 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 TR18

• TR204.2 km
• TR175.4 km
• TR196.7 km
• TR2610.5 km
• TR2712.3 km
• TR1318.3 km
• TR1420.4 km
• TR1525.2 km
• TR1626.2 km
• TR1227.2 km
• TR1030.7 km
• TR532.6 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids