RG21 postcode district

Postcodes and sectors

758 of the district's 1,907 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 51.26478, -1.08847, which locates the district, not a building.

Companies registered in RG21

Companies House lists 2,424 companies with a registered office in RG21; 365 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 RG21

• Basingstoke
• Basingstoke and Deane
• Hampshire
• South East

Roads filed under RG21

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.

• Acorn Close
• Albert Walk
• Albert Yard
• Aldermaston Road South
• Alencon Link
• Alexandra Road
• Allen Close
• Allnutt Avenue
• Amazon Close
• Anchor Yard
• Anstey Close
• Antar Close
• Applegarth Close
• Arlott Drive
• Aspen Way
• Attwood Close
• Avon Walk
• Aylwin Close
• Barbel Avenue
• Basing View
• Baynard Close
• Bay Tree Way
• Beaconsfield Road
• Bedford Walk
• Bedstone Road
• Bennet Close
• Bessemer Road
• Bingley Close
• Black Dam Way
• Blackwater Close
• Blair Road
• Blunden Close
• Bounty Rise
• Bounty Road
• Braddock Court
• Braine L'alleud Road
• Bramblys Close
• Bramblys Drive
• Brocas Drive
• Brookvale Close
• Brunel Road
• Brunswick Place
• Buckby Lane
• Budd's Close
• Bunnian Place
• Burgess Road
• Camberry Close
• Camfield Close
• Camlea Close
• Camrose Way
• Cam Walk
• Camwood Close
• Castle Road
• Castle Square
• Caston's Walk
• Caston's Yard
• Chandler Road
• Chapel Hill
• Charles Richards Close
• Chequers Road

Check an address in RG21

Check an address in RG21

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=RG21" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about RG21

What does an RG21 postcode tell you?

That the address lies in the RG21 district of the RG (Reading) postcode area, and the place OS Open Names most often lists first for its postcodes is Basingstoke. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 758 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 RG21

• RG241.9 km
• RG223.1 km
• RG234.5 km
• RG256.7 km
• RG268.8 km
• RG2910.1 km
• RG2710.7 km
• RG714.8 km
• GU3415.7 km
• GU5117.3 km
• GU5217.3 km
• RG2817.6 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids