What does a GU11 postcode tell you?

That the address lies in the GU11 district of the GU (Guildford) postcode area, which the directory places around Rushmoor. The inward half of the full postcode narrows it to a street or a building; the district alone does not, and an address written with a district and no inward half cannot be checked against the register.

Does a street listed here mean an address on it exists?

It means OS Open Names lists a road of that name under the district, which is what the address lookup answers as a street-level match. It says nothing about any building on it: Great Britain publishes no open register of buildings, so the lookup answers exists: null there and confirms the street alone.

Who lives at these postcodes?

Nobody on this page. A postcode directory says whether a code is in use, never who is there, and a streets register lists roads, not occupants. The address lookup carries no field about a person and never will.

GU11 postcode district

What the public directories installed here say about the GU11 postcode district: how many of its postcodes are in use, the places OS Open Names lists for them, the streets it files under the district and the district's centroid. Counted from the national postcode directory and OS Open Names on 2026-09-18, and never about who is at an address.

postcode area	GU (Guildford)
live postcodes	692
terminated postcodes	531
streets listed	404
centroid	51.24957, -0.76335
counted on	2026-09-18

Places the directory lists for GU11

OS Open Names places the district's postcodes in these settlements, boroughs, counties and regions, most often first. A town written as any of them matches the directory in an address lookup, and one written as another place in the GU area is reported but not scored.

Rushmoor
Hampshire
South East
Aldershot
Farnborough

Postcodes in use

692 postcodes in GU11 were in use on the day of the count. A postcode directory says whether a code is in use, never who is there. 531 of its 1,223 postcodes have been terminated: a real address written with one has moved on, which is not the same thing as a typo, and the address lookup scores it rather than refusing it.

Centroid: 51.24957, -0.76335 — the mean of the live postcodes' centroids, which locates the district, not any building in it.

Streets filed under GU11

OS Open Names files 404 roads under GU11. 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.

A323
A325
Acland Street
Alamein Road
Alanbrooke Road
Albert Road
Albion Mews
Albuhera Road
Alexandra Road
Alice Road
Alison's Road
Alison Way
Alverstoke Gardens
Amberley Grange
Andover Way
Anne Armstrong Close
Anson Close
Anzio Close
Arena Lane
Arlington Terrace

the first 20 of 404, alphabetically

Check an address in GU11

The address checker opens on Great Britain with the district in the field: add the street, the number and the full postcode, and it answers the postcode's status, whether the street is filed under the district, and what kind of delivery point the address names.

Check an address in GU11

curl https://spaw.co/api/v1/address \
  -H "Authorization: Bearer sk_live_…" \
  -H "Content-Type: application/json" \
  -d '{"address": "10 Downing Street, London GU11 …", "country": "GB"}'

Common questions about GU11

What does a GU11 postcode tell you?: That the address lies in the GU11 district of the GU (Guildford) postcode area, which the directory places around Rushmoor. The inward half of the full postcode narrows it to a street or a building; the district alone does not, and an address written with a district and no inward half cannot be checked against the register.
Does a street listed here mean an address on it exists?: It means OS Open Names lists a road of that name under the district, which is what the address lookup answers as a street-level match. It says nothing about any building on it: Great Britain publishes no open register of buildings, so the lookup answers exists: null there and confirms the street alone.
Who lives at these postcodes?: Nobody on this page. A postcode directory says whether a code is in use, never who is there, and a streets register lists roads, not occupants. The address lookup carries no field about a person and never will.

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.

Data synced on 2026-09-18: the newest register or postcode directory copy installed here.

Other districts in GU

Wrong result, or is it about you? If this tool said something you think is wrong, tell us and a person reads it. If Spaw is holding data about you and you never signed up here — a customer may have had your address verified, or reported that a message to it bounced — erase it yourself, confirmed by mail to that address and with no account needed.

More free tools

All free tools

Need this at scale?

The Spaw API runs the same checks plus mailbox-level SMTP verification, batch and bulk endpoints, and list monitoring — 10 free lookups a month, no card required.

Get your API key