GU21 postcode district

Postcodes and sectors

1,155 of the district's 2,120 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 51.32117, -0.57975, which locates the district, not a building.

Companies registered in GU21

Companies House lists 4,232 companies with a registered office in GU21; 1,058 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 GU21

• Surrey
• South East
• Woking
• Sheerwater
• Woodham
• Surrey Heath

Roads filed under GU21

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 Road
• Abercorn Way
• Aberdeen Way
• Abingdon Close
• Addison Road
• Ainsdale Way
• Alanbrooke Close
• Albert Drive
• Alexandra Gardens
• Alison Close
• Alloway Close
• Alma Close
• Alterton Close
• Amis Road
• Amstel Way
• Anchor Crescent
• Anchor Hill
• Armadale Road
• Arnold Road
• Arreton Mead
• Arthur's Bridge Road
• Ashley Court
• Ashley Road
• Ashton Road
• Atkins Close
• Ayrshire Crescent
• Badgers Close
• Bagshot Road
• Bainton Mead
• Bampton Way
• Bankside
• Bardon Walk
• Barley Mow Close
• Barley Mow Lane
• Barnby Road
• Barr's Lane
• Barrack Path
• Barricane
• Barton Close
• Bateson Way
• Batten Avenue
• Beacon Hill
• Bedford Close
• Bedser Close
• Beech Gardens
• Beechwood Close
• Beechwood Road
• Bentham Avenue
• Bingham Drive
• Birch Close
• Birds Grove
• Birdswood Drive
• Bishops Wood
• Bitterne Drive
• Blackmore Crescent
• Blencarn Close
• Bloomfield Close
• Board School Road
• Boundary Road
• Boundary Way

Check an address in GU21

Check an address in GU21

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=GU21" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about GU21

What does a GU21 postcode tell you?

That the address lies in the GU21 district of the GU (Guildford) postcode area, and the place OS Open Names most often lists first for its postcodes is Woking. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,155 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 GU21

• GU222.2 km
• GU243.5 km
• GU235.9 km
• KT146.6 km
• GU206.9 km
• GU187.0 km
• KT157.5 km
• KT168.0 km
• GU28.5 km
• GU18.7 km
• GU258.9 km
• GU198.9 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids