AL5 postcode district

Postcodes and sectors

1,058 of the district's 1,553 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 51.81590, -0.35237, which locates the district, not a building.

Companies registered in AL5

Companies House lists 3,338 companies with a registered office in AL5; 716 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 AL5

• Eastern
• St. Albans
• Hertfordshire
• Harpenden
• St Albans
• Kinsbourne Green
• Central Bedfordshire
• Mackerye End
• Ayres End
• Thrales End

Roads filed under AL5

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.

• Acacia Walk
• Albany Court
• Alders End Lane
• Aldington Place
• Aldwickbury Crescent
• Aldwick Road
• Altwood
• Alzey Gardens
• Amberley Close
• Ambrose Lane
• Amenbury Lane
• Ancaster Close
• Annables Lane
• Aplins Close
• Applewood Close
• Aran Close
• Arcadian Court
• Arden Grove
• Ashcroft Close
• Ashley Gardens
• Ashwell Park
• Avenue St Nicholas
• Ayres End Lane
• Aysgarth Close
• Badingham Drive
• Balfour Court
• Bamville Wood
• Barlings Road
• Barnfield Court
• Barnfield Road
• Barns Dene
• Barrons Row
• Barton Close
• Batford Road
• Baulk Close
• Bayford Court
• Beech Close
• Beeching Close
• Beesonend Lane
• Betjeman Close
• Bewdley Close
• Birch Grove
• Birch Way
• Bloomfield Road
• Bower Heath
• Bower Heath Lane
• Bowers Way
• Bowers Yard
• Bowling Close
• Brackendale Grove
• Bramble Close
• Brampton Close
• Breadcroft Lane
• Broadfields
• Broad Oaks Close
• Broadstone Road
• Browning Road
• Bryant Court
• Bull Road
• Burnsall Place

Check an address in AL5

Check an address in AL5

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=AL5" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about AL5

What does an AL5 postcode tell you?

That the address lies in the AL5 district of the AL (St Albans) postcode area, and the place OS Open Names most often lists first for its postcodes is Harpenden. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,058 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 AL5

• AL34.3 km
• AL46.1 km
• AL17.7 km
• LU18.3 km
• HP28.9 km
• LU29.1 km
• AL89.8 km
• AL1010.3 km
• AL610.6 km
• AL210.8 km
• HP111.4 km
• AL711.6 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids