TN3 postcode district

Postcodes and sectors

567 of the district's 717 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 51.12082, 0.24824, which locates the district, not a building.

Companies registered in TN3

Companies House lists 1,201 companies with a registered office in TN3; 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 TN3

• South East
• Kent
• Tunbridge Wells
• Wealden
• East Sussex
• Langton Green
• Lamberhurst
• Groombridge
• Speldhurst
• Sevenoaks
• Frant
• Bidborough
• Fordcombe
• Bells Yew Green
• Eridge Green
• Stockland Green
• Teasley Mead
• Blackham
• Ashurst
• Rusthall
• Stone Cross
• Bullingstone
• Hook Green
• The Platt

Roads filed under TN3

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.

• Asher Reeds
• Ashurst Hill
• Ashurst Road
• Barden Road
• Barrow Lane
• Bartley Mill Road
• Bayham Road
• Bentham Hill
• Bewlbridge Lane
• Birchetts Avenue
• Bird in Hand Street
• Blackdon Hill
• Bradley Road
• Brewer Street
• Broad Lane
• Broad Oak
• Broadwater Forest Lane
• Brooklands Farm Close
• Broomfield
• Broomhill Road
• Broom Lane
• Broom Park
• Bullingstone Lane
• Bunny Lane
• Burnt House Lane
• Bushy Gill
• Carriers Place
• Chafford Lane
• Church Lane
• Church Road
• Clay Hill Road
• Clayton's Lane
• Clivedon Court
• Cobhams
• Corseley Road
• Courtenwell
• Cricketers Close
• Cuckoo Lane
• Dene Way
• Dornden Drive
• Down Avenue
• Down Lane
• Dundale Road
• Eridge Road
• Etherington Hill
• Ewehurst Lane
• Farnham Beeches
• Farnham Close
• Farnham Lane
• Farnham Place
• Ferbies
• Fern Close
• First Street
• Florance Lane
• Fordcombe Road
• Forest Way
• Forge Road
• Forstall
• Frank's Hollow Road
• Frant Green Road

Check an address in TN3

Check an address in TN3

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=TN3" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about TN3

What does a TN3 postcode tell you?

That the address lies in the TN3 district of the TN (Tonbridge) postcode area, and the place OS Open Names most often lists first for its postcodes is Langton Green. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 567 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 TN3

• TN12.0 km
• TN22.7 km
• TN42.8 km
• TN98.1 km
• TN69.2 km
• TN119.7 km
• TN1010.4 km
• TN710.6 km
• TN510.7 km
• TN2011.6 km
• TN814.5 km
• TN1214.8 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids