CT21 postcode district

Postcodes and sectors

670 of the district's 891 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 51.07213, 1.07511, which locates the district, not a building.

Companies registered in CT21

Companies House lists 1,381 companies with a registered office in CT21; 415 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 CT21

• Folkestone and Hythe
• Kent
• South East
• Hythe
• Lympne
• Saltwood
• West Hythe
• Postling
• Newingreen
• Westenhanger
• Court-at-Street
• Folkestone
• Dymchurch
• Botolph's Bridge
• Sandling
• Pedlinge

Roads filed under CT21

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.

• Admiral Drive
• Albert Lane
• Albert Road
• Albion Place
• Aldergate Lane
• Aldington Road
• Alexandra Corniche
• Alexandra Court
• Argus Way
• Arthur Road
• Ashford Road
• Bank Street
• Bardon Way
• Barrack Hill
• Bartholomew Close
• Bartholomew Lane
• Bartholomew Street
• Bassett Close
• Bassett Gardens
• Battery Point
• Beacon Way
• Belcaire Close
• Bell Inn Road
• Bennett Close
• Berwick Lane
• Blackhouse Hill
• Blackhouse Rise
• Blackman Road
• Bloomfield Gardens
• Blue House Lane
• Botolph's Bridge Road
• Boundary Road
• Bridge Close
• Bridle Way
• Brimstone Way
• Britten Close
• Brockhill Road
• Brook Close
• Bulls Passage
• Burmarsh Road
• Cannongate Avenue
• Cannongate Close
• Cannongate Gardens
• Cannongate Road
• Castle Avenue
• Castle Close
• Castle Road
• Castle View
• Chapel Street
• Charlier Mews
• Chestnut Close
• Church Hill
• Church Rise
• Church Road
• Cinque Ports Avenue
• Claridge Mews
• Cliff Close
• Cliff Road
• Cobay Close
• Cobden Road

Check an address in CT21

Check an address in CT21

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CT21" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CT21

What does a CT21 postcode tell you?

That the address lies in the CT21 district of the CT (Canterbury) postcode area, and the place OS Open Names most often lists first for its postcodes is Hythe. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 670 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 CT21

• CT206.1 km
• CT196.7 km
• CT187.1 km
• TN2512.2 km
• TN2813.2 km
• TN2913.2 km
• TN2415.6 km
• CT1716.5 km
• CT416.8 km
• TN2317.0 km
• CT1617.5 km
• CT1518.3 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids